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2•(x^2-3x+2)-3•(x^2 -2x+1)=​

Răspuns :

[tex]2 \times ( {x}^{2} - 3x + 2) - 3 \times ( {x}^{2} - 2x + 1) = 2x {}^{2} - 6x + 4 - 3x {}^{2} + 6x - 3 = - x {}^{2} + 1[/tex]