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(x+2)²+(x+3)(x-3)-2(x+1)²

Răspuns :

[tex] x^{2} + 4x+ 4+ x^{2} -9-2 ori ( x^{2} +2x+1) \\ x^{2} +4x+4+ x^{2} -9-2 x^{2} -4x-2 = -7[/tex]