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Calculati : (x-1)² - x + 1 =??

Răspuns :

(x-1)²-x+1=x²-2x+1-x+1=x²-x+2
Acesta e raspunsul ,mai departe nimic
[tex](x-1)^2-x+1= x^{2} -2x+1-x+1= x^{2} -3x+2[/tex]