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Respondido

simplifique (x+1)² +2(x-1)² ​

Resposta :

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

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

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

[tex]3x^2-2x+3[/tex]

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