Advertisements
Advertisements
प्रश्न
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
49x2 – 36y2
बेरीज
उत्तर
We have,
49x2 – 36y2 = (7x)2 – (6y)2
= (7x – 6y)(7x + 6y)
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३५]
APPEARS IN
संबंधित प्रश्न
Expand 4p2 – 25q2
(x + 4) and (x – 5) are the factors of ___________
Factorise the following algebraic expression by using the identity a2 – b2 = (a + b)(a – b)
9 – 4y2
Factorise: 4x2 – 9y2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`y^3 - y/9`
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`1/36a^2b^2 - 16/49b^2c^2`
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
x4 – y4
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
8a3 – 2a
Find the value of a, if 9a = 762 – 672
Find the value of `(6.25 xx 6.25 - 1.75 xx 1.75)/(4.5)`