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puteti sami descompuneti in factori polinomul xla puterea a 3 +x la puterea a 2 -2x

Răspuns :

x³+x²-2x=x(x²+x-2)=x(x²-x+2x-2)=x[x(x-1)+2(x-1)]=x(x-1)(x+2)