Dany jest wielomian W(x)=x^3-2x^2-x-3 Oblicz: a)W(-1) b)W(pierwiastek z 2) c)W(pierwiastek z -2)
a)W(-1)=(-1)^3-2(-1)^2-(-1)-3=-1-2+1-3=-5
b)W(\/2)=(\/2)^3-2(\/2)^2-(\/2)-3=2\/2-4-\/2-3=\/2-7
c)W(-\/2)=(-\/2)^3-2(-\/2)^2-(-\/2)-3=-2\/2-4+\/2-3=-\/2-7
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a)W(-1)=(-1)^3-2(-1)^2-(-1)-3=-1-2+1-3=-5
b)W(\/2)=(\/2)^3-2(\/2)^2-(\/2)-3=2\/2-4-\/2-3=\/2-7
c)W(-\/2)=(-\/2)^3-2(-\/2)^2-(-\/2)-3=-2\/2-4+\/2-3=-\/2-7