Respondido

(x+1)2+(x-1)2+2(x+1)(x-1)

Resposta :

CELIOBR01GO

Resposta:

[tex]2x^2+4x-2[/tex]

[tex](x+1)2+(x-1)2+2(x+1)(x-1)=\\2x+2+2x-2+2(x^2-x+x-1)=\\4x+2x^2-2=\\2x^2+4x-2[/tex]

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