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X la puterea 2 +x la puterea 2 -2?

Răspuns :

X la puterea 2 +x la puterea 2 -2

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


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