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# NCERT Solutions for Class 8 Maths Exercise 9.5

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Class 8 Maths Algebraic Expressions and Identities

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

### 1. Use a suitable identity to get each of the following products:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

(viii)

(ix)

(x)

Ans. (i)

[Using identity ]

=

(ii)

=

[Using identity ]

=

(iii)

=

[Using identity ]

=

(iv)

=

[Using identity ]

=

(v)

[Using identity ]

=

(vi)

=

[Using identity ]

=

(vii)

[Using identity ]

=

(viii)

=

[Using identity ]

=

(ix)

=

[Using identity ]

=

(x)

=

[Using identity ]

=

### 2. Use the identity  to find the following products:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

Ans. (i)

[Using identity ]

=

(ii)

[Using identity ]

=

(iii)

=

[Using identity ]

=

(iv)

[Using identity ]

=

=

=

(v)

[Using identity ]

=

=

(vi)

[Using identity ]

=

=

(vii)

[Using identity ]

=

NCERT Solutions for Class 8 Maths Exercise 9.5

### 3. Find the following squares by using identities:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

Ans. (i)

[Using identity ]

=

(ii)

[Using identity ]

=

(iii)

[Using identity ]

=

(iv)

[Using identity ]

=

(v)

[Using identity ]

=

(vi)

[Using identity ]

=

NCERT Solutions for Class 8 Maths Exercise 9.5

### 4. Simplify:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

Ans. (i)

[Using identity ]

=

(ii)

[Using identities and ]

=

=

=

(iii)

[Using identities and ]

=

=

=

(iv)

[Using identity ]

=

=

=

(v)

[Using identity ]

=

=

=

(vi)

[Using identity ]

=

=

(vii)

=

[Using identity ]

=

=

NCERT Solutions for Class 8 Maths Exercise 9.5

### 5. Show that:

(i)

(ii)

(iii)

(iv)

(v)

Ans. (i) L.H.S. =

[Using identity ]

=

=

= []

= R.H.S.

(ii) L.H.S. =

[Using identity ]

=

=

= []

(iii) L.H.S. =

[Using identity ]

=

=

= R.H.S.

(iv) L.H.S. =

=  [Using identities and ]

= = =

= R.H.S.

(v)L.H.S.= =

[Using identity ]

= 0

= R.H.S.

NCERT Solutions for Class 8 Maths Exercise 9.5

### 6. Using identities, evaluate:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

(viii)

(ix)

Ans. (i)

[Using identity ]

= 4900 + 140 + 1 = 5041

(ii)

[Using identity ]

= 10000 – 200 + 1 = 9801

(iii)

[Using identity ]

= 10000 + 400 + 4 = 10404

(iv)

[Using identity ]

= 1000000 – 4000 + 4 = 996004

(v)

[Using identity ]

= 25 + 2.0 + 0.04 = 27.04

(vi)

=

=

[Using identity ]

= 90000 – 9 = 89991

(vii) =

=

[Using identity ]

= 6400 – 4 = 6396

(viii)

[Using identity ]

= 64 + 14.4 + 0.81 = 79.21

(ix) =

=

[Using identity ]

= 100 – 0.25 = 99.75

NCERT Solutions for Class 8 Maths Exercise 9.5

### 7. Using  find

(i)

(ii)

(iii)

(iv)

Ans. (i)

[Using identity ]

= = 200

(ii)

[Using identity ]

= = 0.08

(iii)

[Using identity ]

=  = 1800

(iv)

[Using identity ]

= = 84.0 = 84

### 8.Using , find

(i)

(ii)

(iii)

(iv)

Ans. (i) =

=

[Using identity ]

=

= 10000 + 700 + 12 = 10712

(ii)

=

[Using identity ]

=

= 25 + 1.5 + 0.02 = 26.52

(iii)

=

[Using identity ]

=

= 10000 + 100 – 6 = 10094

(iv)

= [Using identity ]

=

=

= 100 – 5 + 0.06 = 95.06

## NCERT Solutions for Class 8 Maths Exercise 9.5

NCERT Solutions Class 8 Mathematics PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 8 Mathematics includes text book solutions from Class 8 Maths Book . NCERT Solutions for CBSE Class 8 Maths have total 16 chapters. 8 Maths NCERT Solutions in PDF for free Download on our website. Ncert class 8 solutions PDF and Maths ncert class 8 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide.

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### 27 thoughts on “NCERT Solutions for Class 8 Maths Exercise 9.5”

2. very brilliant thing

3. can you say other website related to all subjects

4. It can be understood very easily?????

5. Ans of ex 9.5 Q6 ix is 9.975 here is 99.75

6. Thnks NCERT

7. very good answer and solution, tumne bahot acche tarike se samghaya,,,. “THANKS”
?????????

8. Thanks for this whatever I had not understand in class I understand from this ….

9. Thanks.lt had helped me lot.

10. Sir please learn me factorization

13. Thank uuuu NCERT

14. The 9th question of 6th question of exercise 9.5 is 1.05×9.5 but in solution you had written 1.05, 10.5

15. nice

16. Too useful

17. Thanks ncret and it is helpful to me

18. Thank you

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20. It’s great and really helpful

21. i understood easily the problems thank you ncert***

22. Thank you ncert

23. Thank u:)

24. Thanks to MY CBSE GUIDE for such elaborated answer. These answers helped me alot. In my studies. I was 2 chapter ahead from the school in maths. When I don’t understand anything I simply open this website and have my answers with elaboration.
Thanks

25. thank you

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