Q2 Factorise :

(I) 

4 p^2 - 9 q ^2

Answers (1)

This can be factorised as follows
               4 p^2 - 9 q ^2 = (2p)^{2} - (3q)^{2} = (2p - 3q)(2p + 3q)                                                   (using \ (a)^{2} - (b)^{2} = (a-b)(a+b))

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