Advertisements
Advertisements
प्रश्न
Expand (2p − 3q)2
बेरीज
उत्तर
It is known that, (a + b)2 = a2 + 2ab + b2 and (a − b)2 = a2 − 2ab + b2.
(2p − 3q)2
= (2p)2 − 2 × (2p) × (3q) + (3q)2
= 4p2 − 12pq + 9q2
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
संबंधित प्रश्न
Expand `("x"-2/"x")^2`
Expand (7m − 4)2
(p – q)2 = _______________
1032 – 1022 = ______ × (103 – 102) = ______.
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
x2 – 8x + 16
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
x2 – 10x + 25
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
`9y^2 - 4xy + (4x^2)/9`
Factorise the following.
y2 + 4y – 21
Factorise the following.
x2 – 17x + 60
Factorise the following.
a2 – 16p – 80
