NCERT Solutions Class 8 Maths Chapter 9 Exercise 9.5

Mathematics is a highly interesting and practical discipline. It is one of the most important subjects that are a part of the Class 8 curriculum. Mathematics is the study of numbers, their relationships, analysis, formulae, quantities, space, and forms. It is an essential component of Engineering, Science, Pharmaceutics, Finance and Accounting, Computer Science, and Medical Science among other fields. Mathematics acts as a cornerstone for numerous occupations, including Engineering, Architecture, Flying, Statistics, Insurance, and many more. Mathematics aids in the development of a variety of abilities that are essential to an individual’s overall growth. It aids in the development of abilities such as Critical Thinking, Problem-Solving, Logical Reasoning, Analysis and Management, Quantitative Aptitude, and so on. Acquiring these abilities can help students clear a variety of competitive examinations like NEET, AFCAT, MAT, JEE Mains, JEE Advance, AIIMS, CAT, CUET, and others. Students must instill these abilities in order to perform well in the relevant examinations. Developing these abilities may help students lay the foundation for a career in a variety of professions; hence, it is critical that students study Mathematics with vigour. Students may make use of the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 to develop basic mathematical abilities. The NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 can be accessed by students from the Extramarks website.

Students should utilise the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 to study and prepare for the Class 8 Senior Secondary Examination. The NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 are available on the Extramarks website and mobile application. The importance of Class 8 in the senior secondary academic period must be comprehended by students of Class 8. Class 8 Maths Chapter 9 Exercise 9.5 is one of the most crucial exercises presented in the syllabus of the NCERT textbook of Mathematics for Class 8. Students are advised to practise the Class 8 Maths Exercise 9.5 Solution in a regular and active manner in order to fully comprehend each topic covered in the concerned exercise. Students can use the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 to assist them in solving exercise problems. They must have a complete and accurate understanding of mathematical principles in order to build a successful career. Students in Class 8 can use the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 to improve their fundamental mathematical skills. To achieve high marks in the senior secondary examination, students in Class 8 may refer to the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5. Students may acquire the solutions from the Extramarks website. Moreover, they can greatly benefit from theNCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 for their preparation. It is strongly advised that students thoroughly go through the solutions toNCERT Class 8 Maths Chapter 9 Exercise 9.5 to prepare for the Senior Secondary Mathematics Examination.

NCERT Solutions For Class 8 Maths Chapter 9 Algebraic Expressions And Identities (EX 9.5) Exercise 9.5

Students are advised to refer to the Extramarks website for their preparation. Extramarks is an educational website. It provides study resources and pedagogical materials for students. The study material provided by Extramarks has been prepared with students’ learning requirements in mind. Students may visit the Extramarks website to study on a regular basis and to access study materials for preparation for examinations. The NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 have been provided by Extramarks for students to be able to better prepare for their Mathematics examination.

Extramarks allows students to download PDF files of required study material or learning resources.Considering the fact that all students may not have constant access to the internet or may suffer from issues with their internet connection, Extramarks has made available the feature of downloading study material in PDF format for students from the Extramarks website. Students of Class 8 can download the PDF file of the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 from Extramarks for their preparation.Students can also access various other learning resources from the Extramarks website, ranging from NCERT solutions for all subjects in all classes, to sample papers and revision notes. Also, they are recommended to attentively study the syllabus of the Senior Secondary Examination of Mathematics in order to perform well and score high marks in the concerned examination. The NCERT Class 8 Maths Chapter 9 Exercise 9.5 can be utilised by students to be well-prepared for the same.

It is suggested that students prepare for the Senior Secondary Mathematics Examination well in advance to increase their chances of performing exceptionally well in the concerned examination. Students must start studying for the final examination from the beginning of the academic session with the help of the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 provided by Extramarks on the Extramarks website and mobile application. Students may also download the mobile application of Extramarks to make it easier for them to access the required study material.

It is advisable for students to attend the online live sessions in relation to the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5. Participating in live sessions can provide students with an exceptional learning experience. Since these online live sessions are highly interactive, they can help students  gain self-awareness regarding the areas and topics they need to work on. If students have any doubts regarding the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5, theymay raise queries in the online live session that can then be addressed by experts in the concerned fields. It is highly recommended that students practice the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 regularly to enhance their knowledge of the topics covered in Chapter 9 titled Algebraic Expressions and Identities. The NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 can be accessed by students from the Extramarks website or mobile application.

Access NCERT solutions for Class 8 Chapter 9-Algebraic Expressions and Identities

Students must adequately study the NCERT curriculum in order to obtain the greatest possible results in the Senior Secondary Examination. They must understand the significance of performing well in the senior secondary examination. The grades students receive in their senior secondary examinations play a role in determining how far they will advance academically.Students may utilise the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 to help them prepare for the senior secondary examination. The NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 have been thoroughly detailed to assist students to comprehend the study material better. One of the most essential exercises from the NCERT Mathematics Chapter 9 Algebraic Expressions and Identities syllabus is Class 8 Maths Exercise 9.5.

Given that Algebraic Expressions and Identities may be a difficult topic, it is critical that students understand the concepts taught in this chapter and properly apply them to problems and their solutions. Students can review the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 and practise answering the questions in Exercise 9.5 Class 8 of the NCERT Mathematics textbook for better preparation. Students taking the Senior Secondary Mathematics Examination must prepare for the exam in advance.

Furthermore, students who begin the senior secondary exam preparation process early will be able to prepare more effectively. It may boost the probability of scoring high in the relevant examination. Students should practise the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 on a regular basis to ensure a satisfactory result in the senior secondary examination. It is critical to do well in the senior secondary exams since students’ scores in Class 8 make a significant difference in their performance in higher divisions. In conclusion, students should make it a point to go over the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 in a timely manner. They may obtain the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 from the Extramarks website and mobile application to help them prepare for the senior secondary examination

It is critical that students comprehend the mathematical principles taught in Class 8 Mathematics since they are crucial to passing numerous competitive examinations such as JEE IIT, NEET, AIIMS, CAT, MAT, and others. Consistent practise can assist students in gaining comprehension of the mathematical ideas required to pass these competitive examinations. Students must thoroughly study Class 8 Mathematics Chapter 9 Algebraic Expressions and Identities. This can be accomplished by practising Extramarks’ solutions for Class 8 Maths Chapter 9 Exercise 9.5 on a regular basis.The NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 are useful for improving comprehension of various mathematical topics mentioned in NCERT Mathematics Chapter 9 – Algebraic Expressions and Identities. The NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 might help students prepare for the Senior Secondary Examination of Mathematics.

NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities Exercise 9.5

Chapter 9 entitled – Algebraic Expressions and Identities is one of the most important chapters in the NCERT Mathematics curriculum for Class 8. This chapter comprises many complex formulas. To master this chapter, students must understand not only the ideas discussed in it but also how to apply these ideas practically. They are, thus, encouraged to practice the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 to better understand the practical application required in Chapter 9 Algebraic Expressions and Identities. Students must study and comprehend the mathematical themes taught in the Class 8 Mathematics curriculum. It is critical for students to expand their understanding of mathematical ideas. This has a substantial impact on Class 8 students’ performance in the Senior Secondary Examination. Students can substantially benefit from gaining the knowledge needed for the practical application required in Chapter 9 Algebraic Expressions and Identities, and students are encouraged to practise the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 as they prepare for the Senior Secondary Mathematics Examination.

Students in Class 8 can use the Extramarks website and learning application to acquire the essential study materials and NCERT solutions for all subjects. They must attentively study the NCERT textbook in order to achieve good marks in the senior secondary examination. Students are advised to begin working through the relevant curriculum with reference to the NCERT textbook atthe start of the academic course. Beginning preparation early may provide students with the advantage they need to ace the senior secondary examination. Students who are having difficulty grasping the ideas introduced in Chapter 9 of the NCERT textbook of Mathematics can use Extramarks’ NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5. Extramarks’ NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 have been compiled by specialists in the relevant field to provide students with the best results possible.

The CBSE board guidelines are adhered to in the development of the NCERT curriculum. Students enrolled with the CBSE board are advised to study from the NCERT textbook. It is recommended that students study for their senior secondary examinations using the NCERT exercise problems and solutions. Students in Class 8 can use the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 to prepare for the Mathematics examination. The NCERT solutions to all exercise problems from all courses are accessible on the Extramarks website and mobile application. Students may obtain the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 from the Extramarks website or mobile application. Students in Class 8 can participate in a doubt-clearing session on the Extramarks website to get answers to any questions they may have regarding the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5. Extramarks is a website that provides study resources for all boards and classes. Students taking the CBSE board examination can refer to Extramarks’ study resources while preparing for their exam, as they are designed with the CBSE board examination in mind. The NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 available on the Extramarks website, are strongly recommended for Class 8 students preparing for the Senior Secondary Mathematics Examination.

NCERT Solutions for Class 8

Since the Central Board of Secondary Education question paper pattern is based on the NCERT curriculum, it is recommended that students prepare for the CBSE board examination by studying the NCERT exercise problems and solutions. The NCERT curriculum serves as the foundation for the CBSE board examination framework. Students may get the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 from the Extramarks website to help them prepare for the Senior Secondary Examination of Class 8 Mathematics. To score well in the senior secondary examination, students must master all of the concepts taught in Chapter 9 of the NCERT Mathematics book. Students in Class 8 can use the Extramarks website to get study material based on CBSE board criteria. While studying for the senior secondary examination, students should refer to the study material designed in accordance with the CBSE board standards. The study material and learning resources provided by Extramarks have been prepared in accordance with the CBSE board standards. Students preparing for the Senior Secondary Mathematics Examination can refer to the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 on the Extramarks website and learning application. Students may use the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 to help them improve their academic performance.

They should consider the weightage of each topic taught in the concerned curriculum when studying for the senior secondary examination. The topic weightage for the senior secondary examination should be considered during preparation since it can help students determine the value of each topic. The ideas covered in Mathematics Exercise 9.5 of Class 8 are critical in the Senior Secondary Examination of Mathematics. The NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 are useful for studying for the concerned examination. Students must make an effort to comprehend the topics taught in the relevant curriculum in order to be adequately prepared for the final exam. In order to fully prepare for the senior secondary examination, students must stick to a timetable that devotes substantial time to each topic covered in the curriculum. They may use the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 to help them prepare. Extramarks’ NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 have been formed by experts in the concerned field of study. The NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 have been methodically broken down into steps for the convenience of students.  Students are advised to be sincere in their preparation for the senior secondary examination because the results of the senior secondary examination may influence the professional path that students choose.Students are urged to examine past years’ papers from time to time in order to become acquainted with the question paper format. Knowing the pattern of the question paper might assist students to acquire confidence while answering examination questions.

Q.1

Use a suitable identity to get each of the following products.(i) (x+3)(x+3) (ii)(2y+5)(2y+5)iii 2a−72a−7 iv 3a−123a−12(v) (1.1m−0.4)(1.1m+0.4) (vi) (a2+b2)(−a2+b2)(vii) (6x−7)(6x+7) (viii) (−a+c)(−a+c)ix x2+3y4x2+3y4 x 7a−9b7a−9b

Ans

i x+3x+3=(x+3)2=(x)2+2×3×x+(3)2 {By using the identity(a+b)2=a2+b2+2ab}=x2+6x+9ii 2y+52y+5=(2y+5)2=(2y)2+2×5×2y+(5)2 {By using the identity(a+b)2=a2+b2+2ab}=4y2+20y+25iii 2a−72a−7=(2a−7)2=(2a)2−2×2a×7+(7)2 {By using the identity(a−b)2=a2+b2−2ab}=4a2−28a+49iv 3a−123a−12=(3a−12)2=(3a)2−2×3a×12+(12)2 {By using the identity(a−b)2=a2+b2−2ab}=9a2−3a+14(v) (1.1m−0.4)(1.1m+0.4)=(1.1m)2−(0.4)2 {By using the identity(a+b)(a−b)=a2−b2}=1.21m2−0.16(vi) (a2+b2)(−a2+b2)=(b2)2−(a2)2 {By using the identity(a+b)(a−b)=a2−b2}=b4−a4(vii) (6x−7)(6x+7)=(6x)2−(7)2 {By using the identity(a+b)(a−b)=a2−b2}=36x2−49(viii) (−a+c)(−a+c)=(−a+c)2 {By using the identity(a+b)2=a2+b2+2ab} =c2+a2−2ac

ix (x2+3y4)(x2+3y4)=(x2+3y4)2=(x2)2+(3y4)2+2(x2)(3y4) {By using the identity(a + b)2=a2+b2+2ab}= x24+9y216+3xy4x 7a−9b7a−9b=(7a−9b)2=(7a)2+(9b)2−2(7a)(9b) {By using the identity(a−b)2=a2+b2−2ab}=49a2+81b2−126ab

Q.2

Use the identity (x+a)(x+b)=x2+(a+b)x+abto find the following products.(i) (x+3)(x+7)(ii) (4x+5)(4x+1)(iii) (4x−5)(4x−1)(iv) (4x+5)(4x−1)(v) (2x+5y)(2x+3y)(vi) (2a2+9)(2a2+5)(vii) (xyz−4)(xyz−2)

Ans

i (x+3)(x+7)=x2+(3+7)x+3×7=x2+10x+21ii 4x+54x+1=(4x)2+5+1(4x)+5×1=16x2+24x+5iii 4x−54x−1=(4x)2+[(−5)+(–1)](4x)+(–5)×(−1)=16x2−24x+5iv 4x+54x−1=(4x)2+[5+(−1)](4x)+5×(−1)=16x2+16x−5v 2x+5y2x+3y=(2x)2+5y+3y(2x)+5y×3y=4x2+16xy+15y2vi 2a2+92a2+5=(2a2)2+9+5(2a2)+9×5=4a4+28a2+45vii xyz−4xyz−2=(xyz)2+[(−4)+(–2)](xyz)+(–4)×(−2)=x2y2z2−6xyz+

Q.3

Find the followings quares by using the identities.i (b−7)2ii (xy+3z)2iii (6x2−5y)2iv (23m+32n)2v (0.4p−0.5q)2vi (2xy+5y)2

Ans

i (b−7)2=(b)2−2×b×7+(7)2 {By using the identity(a − b)2=a2+b2−2ab}=b2−14b+49ii (xy+3z)2=(xy)2+2×xy×3z+(3z)2 {By using the identity(a + b)2=a2+b2+2ab}=x2y2+6xyz+9z2iii (6x2−5y)2=(6x2)2−2×6x2×5y+(5y)2 {By using the identity(a − b)2=a2+b2−2ab}=36x4−60x2y+25y2iv (23m+32n)2=(23m)2+2×23m×32n+(32n)2{By using the identity(a + b)2=a2+b2+2ab}=49m2+2mn+94n2v (0.4p−0.5q)2=(0.4p)2−2×0.4p×0.5q+(0.5q)2 {By using the identity(a − b)2=a2+b2−2ab}=0.16p2−0.4pq+0.25q2vi (2xy+5y)2=(2xy)2+2×2xy×5y+(5y)2 {By using the identity(a + b)2=a2+b2+2ab}=4x2y2+20xy2+25y2

Q.4

Simplify.i (a2−b2)2ii (2x+5)2−(2x−5)2iii (7m−8n)2+(7m+8n)2iv (4m+5n)2+(5m+4n)2v (2.5p−1.5q)2−(1.5p−2.5q)2vi (ab+bc)2−2ab2cvii (m2−n2m)2+2m3n2

Ans

i (a2−b2)2=(a2)2−2×a2×b2+(b2)2{By using the identity(a − b)2=a2+b2−2ab}=(a)4−2a2b2+(b)4ii (2x+5)2−(2x−5)2=[(2x)2+2×2x×5+(5)2]−[(2x)2−2×2x×5+(5)2] {By using the identity(a + b)2=a2+b2+2ab}{By using the identity(a – b)2=a2+b2–2ab}=4x2+20x+25−4x2+20x−25=40xiii (7m−8n)2+(7m+8n)2=[(7m)2−2×7m×8n+(8n)2]+[(7m)2+2×7m×8n+(8n)2] {By using the identity(a − b)2=a2+b2−2ab}{By using the identity(a + b)2=a2+b2+2ab}=49m2−112mn+64n2+49m2+112mn+64n2=98m2+128n2iv (4m+5n)2+(5m+4n)2=[(4m)2+2×4m×5n+(5n)2]+[(5m)2+2×5m×4n+(4n)2] {By using the identity(a + b)2=a2+b2+2ab}=(16m2+40mn+25n2)+(25m2+40mn+16n2)=41m2+80mn+41n2v (2.5p−1.5q)2−(1.5p−2.5q)2=[(2.5p)2−2×2.5p×1.5q+(1.5q)2]−[(1.5p)2−2×1.5p×2.5q+(2.5q)2] {By using the identity(a − b)2=a2+b2−2ab}=6.25p2−7.5pq+2.25q2−[2.25p2−7.5pq+6.25q2]=6.25p2−7.5pq+2.25q2−2.25p2+7.5pq−6.25q2=4p2−4q2

vi (ab+bc)2−2ab2c=[(ab)2+2×ab×bc+(bc)2]−2ab2c {By using the identity(a + b)2=a2+b2+2ab}=a2b2+2ab2c+b2c2−2ab2c=a2b2+b2c2vii (m2−n2m)2+2m3n2=[(m2)2−2×m2×n2m+(n2m)2]+2m3n2 {By using the identity(a − b)2=a2+b2−2ab}=m4−2m3n2+n4m2++2m3n2=m4+n4m2

Q.5

Showthat.i (3x+7)2−84x=(3x−7)2ii (9p−5q)2+180pq=(9p+5q)2iii (43m−34n)2+2mn=169m2+916n2iv (4pq+3q)2−(4pq−3q)2=48pq2v (a−b)(a+b)+(b−c)(b+c)+(c−a)(c+a)=0

Ans

i L.H.S=(3x+7)2−84x=(3x)2+72+2×3x×7−84x=9x2+49+42x−84x=9x2+49−42x  R.H.S=(3x−7)2=(3x)2+72−2×3x×7=9x2+49−42x∴L.H.S=R.H.SHence ProvediiL.H.S=(9p−5q)2+180pq=(9p)2+(5q)2−2×9p×5q+180pq=81p2+25q2−90pq+180pq=81p2+25q2+90pq  R.H.S=(9p+5q)2=(9p)2+(5q)2+2×9p×5q=81p2+25q2+90pq∴L.H.S=R.H.SHence ProvediiiL.H.S=(43m−34n)2+2mn=(43m)2+(34n)2−2×43m×(34n)+2mn=169m2+916n2−2mn+2mn=169m2+916n2  R.H.S=169m2+916n2∴ L.H.S=R.H.SHence Proved

iv L.H.S=(4pq+3q)2−(4pq−3q)2=48pq2=(4pq)2+(3q)2+2×4pq×(3q)−[(4pq)2+(3q)2−2×m4pq×(3q)]=16p2q2+9q2+24pq2−[16p2q2+9q2−24pq2]=16p2q2+9q2+24pq2−16p2q2−9q2+24pq2=48pq2  R.H.S=48pq2∴ L.H.S=R.H.SHence Proved(v)L.H.S=(a−b)(a+b)+(b−c)(b+c)+(c−a)(c+a)=a2−b2+b2−c2+c2−a2=0  R.H.S=0∴ L.H.S=R.H.SHence Proved

Q.6

Using identities, evaluate.(i) 712 (ii) 992 (iii) 1022 (iv) 9982(v) 5.22 (vi) 297×303 (vii) 78×82 (viii) 8.92(ix) 10.5×9.5

Ans

i 712=(70+1)2=(70)2+2×70×1+12 {By using the identity(a + b)2=a2+b2+2ab}=4900+140+1=5041ii 992=(100−1)2=(100)2−2×100×1+12 {By using the identity(a − b)2=a2+b2−2ab}=10000−200+1=9801iii 1022=(100+2)2=(100)2+2×100×2+22 {By using the identity(a + b)2=a2+b2+2ab}=10000+400+4=10404iv 9982=(1000−2)2=(1000)2−2×1000×2+22 {By using the identity(a − b)2=a2+b2−2ab}=1000000−4000+4=996004

(v) 5.22=(5+0.2)2=(5)2+2×5×0.2+(0.2)2 {By using the identity(a + b)2=a2+b2+2ab}=25+2+0.04=27.04(vi) 297×303=(300−3)(300+3)=(300)2−32 {By using the identity(a−b)(a+b)=a2−b2}=90000−9=89991(vii) 78×82=(80−2)(80+2)=(80)2−22 {By using the identity(a−b)(a+b)=a2−b2}=6400−4=6396viii 8.92=(9.0−0.1)2=81−1.8+0.01 {By using the identity(a−b)2=a2+b2−2ab}=79.21(ix) 10.5×9.5=10+0.510–0.5=[102−(0.5)2] {By using the identity(a−b)(a+b)=a2−b2}=100 –0.25 = 99.75

Q.7

Using a2− b2 = (a + b) (a − b), find(i) 512 −492 (ii) (1.02)2− (0.98)2 (iii) 1532 − 1472(iv) 12.12 − 7.92

Ans

(i) 512−492=(51+49)(51−49)=100×2=200(ii) (1.02)2− (0.98)2 =(1.02+0.98)(1.02−0.98)=2×0.04=0.08(iii) 1532−1472=(153+147)(153−147)=300×6=1800(iv) 12.12−7.92=(12.1+7.9)(12.1−7.9)=20.0×4.2=84

Q.8

Using (x+a) (x+b)=x2+(a+b)x+ab, find(i) 103×104 (ii) 5.1×5.2 (iii) 103×98 (iv) 9.7×9.8

Ans

(i) 103×104=(100+3)(100+4)=(100)2+3+4×100+3×4=10000+700+12=10712(ii) 5.1×5.2=(5+0.1)(5+0.2)=(5)2+0.1+ 0.2×5+0.1×0.2=25+1.5+0.02=26.52(iii) 103×98=(100+3)(100−2)=(100)2+[3+(−2)]×100+3×(−2)=10000+100−6=10094(iv) 9.7×9.8=(10−0.3)(10−0.2)=(10)2+[(−0.3)+(−0.2)]×10+(−0.3)×(−0.2)=100+(−0.5)10+0.06=100.06−5=95.06

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FAQs (Frequently Asked Questions)

1. Why should students use the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 to study?

When drafting the NCERT curriculum, the Central Board of Secondary Education’s requirements are taken into account. The NCERT solutions are accessible via the Extramarks website and mobile application. The study materials and learning aids on the Extramarks website and mobile application are based on the CBSE standards. Students in Class 8 can obtain the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 from the Extramarks website for their study requirements since they have been designed in accordance with the CBSE Board standards and guidelines.

2. How significant is Chapter 8 Algebraic Expressions and Identities in Class 8 Mathematics?

Chapter 8 Algebraic Expression and Identities is an integral part of the Class 8 Mathematics curriculum. It is critical that students comprehend the significance of this chapter in the Senior Secondary Mathematics Examination. In the senior secondary examination, Chapter 8 Algebraic Expression and Identities has a significant weightage. It is a very technical chapter, and students are expected to study it thoroughly. Since this is an application-based chapter, students must routinely and consistently practice the NCERT exercise problems and solutions. Students may take advantage of the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 from the Extramarks website to prepare for the exam.

3. Why should students in Class 8 resort to NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 revision notes and sample papers?

It is vital that students solve practice papers since doing so can improve their understanding and application of mathematics concepts. By solving sample papers, students’ competence in the relevant subject will be challenged and developed. Students can acquire sample papers for this purpose. Students can get practice papers via the Extramarks website and mobile application. They can also get NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 practice and sample papers from the Extramarks website and learning application. Students can prepare by doing sample papers. They may gain confidence by practising answering exercise problems and answers, as well as solving sample papers.

4. Is the Mathematics Senior Secondary Examination of Class 8 difficult?

The Mathematics Senior Secondary Examination in Class 8 might be difficult. However, if students prepare extensively before taking the examination, it is not difficult to obtain high grades in the senior secondary examination. Students must thoroughly cover the relevant syllabus in order to perform well in the Senior Secondary Examination of Mathematics. Students can use the NCERT Solutions For Class 8 Maths Chapter 9 Exercise 9.5 to help them prepare.