Wielomian W(x)=x^3-x^2-x+1 można przedstawić w postaci:
A) W(x)= (x-1)^2(x+1)
B) W(x)= x^2(x-1)
C) W(x)= (x+1)^2(x-1)
D) W(x)= x^2(x+1)
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a)(x-1)²(x+1)=
= (x²-2x+1)(x+1)=
=x³+x²-2x²-2x+x+1=
=x³-x²-x+1
odpowiedz a
licze na naj