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

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Chapter 9 - Algebraic Expressions and Identities Ex. 9.1

Solution 1

 

The terms and the respective coefficients of the given expressions are as follows:

  

-

Terms

Coefficients

(i)

5XYZ2

- 3ZY

5

- 3

(ii)

1

+ X

+ X2

1

1

1

(iii)

4X2Y2

- 4X2Y2Z2

+Z2

4

-4

1

(iv)

3

-pq

+qr

-rp

3

-1

1

-1

(v)

begin mathsize 12px style straight x over 2 end style

begin mathsize 12px style straight y over 2 end style

-xy

begin mathsize 12px style 1 half end style

begin mathsize 12px style 1 half end style

-1

(vi)

0.3a

-0.6ab

+0.5b

0.3

-0.6

+0.5

 

Solution 2
Solution 3

Solution 4

Chapter 9 - Algebraic Expressions and Identities Ex. 9.2

Solution 1
Solution 2
Solution 3
Solution 4
Solution 5

Chapter 9 - Algebraic Expressions and Identities Ex. 9.3

Solution 1
Solution 2
Solution 3
Solution 4
Solution 5

Chapter 9 - Algebraic Expressions and Identities Ex. 9.4

Solution 1

Solution 2
Solution 3


Chapter 9 - Algebraic Expressions and Identities Ex. 9.5

Solution 1


Solution 2

Solution 3
Solution 4


Solution 5

Solution 6

Solution 7
Solution 8