Advertisements
Advertisements
प्रश्न
Factorise the following expression.
(l + m)2 − 4lm (Hint: Expand (l + m)2 first)
बेरीज
उत्तर
(l + m)2 − 4lm
= l2 + 2 × l × m + m2 − 4lm ...[∵ (a + b)2 = a2 + 2ab + b2]
= l2 − 2lm + m2 − 4lm
= l2 − 2lm + m2
= (l − m)2
= (l − m) (l − m)
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Factorise the following expression.
p2 − 10p + 25
Factorise the following expression.
49y2 + 84yz + 36z2
Factorise the following expression.
4x2 − 8x + 4
Factorise the following expression.
a4 + 2a2b2 + b4
Factorise.
63a2 − 112b2
Factorise the expression.
7p2 + 21q2
Factorise.
x4 − (x − z)4
Factorise the given expression.
q2 − 10q + 21
Factorise m4 – 256
Factorise the following expression:
ab – ac – mb + mc
