Factorisation - Solutions 2
CBSE Class –VIII Mathematics
NCERT Solutions
CHAPTER - 14
Factorisation (Ex. 14.2)
NCERT Solutions
CHAPTER - 14
Factorisation (Ex. 14.2)
1. Factorize the following expressions:
(i)
(ii) 

(iii)
(iv) 

(v)
(vi) 

(vii)
[Hint: Expand
first]
first]
(viii) 

Ans. (i) 

Using identity
,
,
Here
and 
and 
= 
(ii) 

Using identity
,
,
Here
and 
and 

(iii) 

Using identity
, here 
, here 

(iv) 



Using identity
, here 
, here 

(v) 

Using identity
, here 
, here 

(vi) 



Using identity
, here 
, here 

(vii)
=


= 

= 

=


(viii) 

=


2. Factorize:
(i)
(ii) 

(iii)
(iv) 

(v)
(vi) 

(vii)
(viii) 

Ans. (i) 

=


(ii)
=


(iii)
= 
= 
=


(iv) 

= 

=


(v)


= 

= (2l) (2m) = 4lm
(vi) 

=


(vii)


=


(viii) 


= 

=


= 

=


= 

3. Factorize the expressions:
(i)
(ii) 

(iii)
(iv) 

(v)
(vi) 

(vii)
(viii) 

(ix) 

Ans. (i)
= 
= 
(ii)
= 
= 
(iii)
= 
= 
(iv)
=

= 

(v)
= 
= 
= 

(vi)
=
=
(vii)
= 

= 

= 

(viii) 

= 

= 

(ix)
= 

= 

= 

4. Factorize:
(i)
(ii) 
(ii) 
(iii)
(iv) 
(iv) 
(v) 

Ans. (i) 

=


=


(ii) 

=


= 

=


(iii) 

=


=


= (x - y - z) (x + y + z) [x2 + (y + z)2]
(iv) 

=


= [x - (x - z)][x + (x - z)] [x2 + (x - z)2] 

= [x - x + z] [x + x - z] [x2 + x2 - 2xz + z2] 

= z (2x - z) (2x2 - 2xz + z2)
(v)
= 
= 
=


=


=


5. Factorize the following expressions:
(i)
(ii) 

(iii) 

Ans.
(i) 

= 

= 

= 

(ii) 

= 

= 

= 

(iii) 

= 

= 

= 
