1.

-x %2B 12*x^3 - 7*x^2 %2B 7

Answer»

x3-7x2-x+7 19 €÷%÷_÷_÷_÷__73/÷

x^3-7x^2-x+7=x^2(x-7)-1( x-7)= ( x-7)(x^2-1)=(x-7)(x-1)(x+1)



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