Question

simplify : 4a^2-(3b-4c)^2%4(2c+a)^2-9b^2

Answer 1

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Answer 2

(4a2-9b2-16c2+24bc)-(16c2+4a2+16ac-9b2) =-32c2+24bc-16ac =8c(4c+3b-2a)