(3ab-4)square -(4ab+10)square
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Answer:
(3ab)^2+(4^)2-2.(3ab)(4)-((4ab)^2+(10)^2+2.(4ab)(10)
9a^2b^2+16-24ab-16a^2 b^2 +100+80ab
=-7a^2 b^2 +11+56ab
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