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Wielomian jest podzielny przez dwumian (x-1)
W(x)=x²(x-1)-2x(x-1)-8(x-1)=(x-1)(x²-2x-8)=(x-1)(x²+2x-4x-8)=
(x-1)*[x(x+2)-4(x+2)]=(x-1)(x+2)(x-4)
Pozostale pierwiastki wielomianu, to x=-2, x=4.
Dzielenie wielomianu:
(x³-3x²-6x+8):(x-1)=x²-2x-8
-x³+x²
--------------
-2x²-6x
2x²-2x
-----------------
-8x+8
8x-8
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