(x-4)^2+2(4+x)(4-x)+(x+4)^2

Question

(x-4)^2+2(4+x)(4-x)+(x+4)^2

Answer 1

(x-4)^2+2(4+x)(4-x)+(x+4)^2=х^2-8х+16+32-2х^2+х^2+8х+16=64

Comments

=64

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=х²-8х+16+32-2х²+х²+8х+16 = 64