Question

evaluate using suitable identities ( x^2 + 8x + 32 ) ( x^2 - 8x +32 )​

Answer 1

(a-b+c)2=a2+b2+c2-2ab+2bc+2ca

(2x-8x+32)2=(2x)2+(-8x)2+(32)2-[(2×2x×(-8x)]+[(2×(-8x)×32]+[2×32×2x]

=4x2-64x2-1024-32x2-512x-128x

hope it's help

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