(potrzebne na już). zamień wielomian na czynniki i podaj pierwiastek
w(x)= x do4 - 16x do2
w(x)= x do3 + 2x do2-x-2
w(x)= x ⁴ - 16x ²=x²(x²-16)=x²(x-4)(x+4)
x²(x-4)(x+4)=0
x²=0 v x-4=0 v x+4=0
x=0, x=4, x=-4
w(x)= x ³ + 2x²-x-2=x²(x+2)-(x+2)=(x+2)(x²-1)=(x+2)(x-1)(x+1)
(x+2)(x-1)(x+1)=0
x+2=0 v x-1=0 v x+1=0
x=-2, x=1 , x=-1
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w(x)= x ⁴ - 16x ²=x²(x²-16)=x²(x-4)(x+4)
x²(x-4)(x+4)=0
x²=0 v x-4=0 v x+4=0
x=0, x=4, x=-4
w(x)= x ³ + 2x²-x-2=x²(x+2)-(x+2)=(x+2)(x²-1)=(x+2)(x-1)(x+1)
(x+2)(x-1)(x+1)=0
x+2=0 v x-1=0 v x+1=0
x=-2, x=1 , x=-1