Question

30. Factorise the following expression.
(i) 63a- 112b2​

Answer 1

Answer:

7(3a+4b)(3a−4b)

Step-by-step explanation:

63a −112b^2

=7(9a 2 −16b 2 )

=7[(3a) 2 −(4b) 2]

Using, a^2 −b^2 =(a+b)(a−b)

=7(3a+4b)(3a−4b)

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