4(xy+1)^2-9(x-1)^2 factorise
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Step-by-step explanation:
As given,
4(xy + 1)2 – 9(x – 1)2
= [2x (xy + 1)]2 – [3 (x – 1)]2
= (2xy + 2 + 3x – 3) (2xy + 2 – 3x + 3)
= (2xy + 3x – 1) (2xy – 3x + 5)
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