Factorise : 4(2 a-3)^2-3(2 a-3)(a-1)-7(a-1)^2 - Vidyadip

Question

Factorise : $4(2 a-3)^2-3(2 a-3)(a-1)-7(a-1)^2 \quad$

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Answer

$(a-5)(3 a-4)$
[Hint. Put $(2 a-3)=x$ and $(a-1)=y$.]

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