Question

problema de algebra,ayúdenme Uwu
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Answer 1

E = (x+2)^2 - 2(x+1)^2 + x^2

E = (x^2+2x•2+2^2) - 2(x^2+2x•1+1^2) + x^2

E = (x^2+4x+4) - 2(x^2+2x+1) + x^2

E = x^2+4x+4 - 2x^2-4x-2 + x^2

E = x^2+4 - 2x^2-2 + x^2

E = x^2+2-2x^2+x^2

E = 2x^2+2-2x^2

E= 2