w(x)=x4-2x3-x2+2x
0=x4-2x3-x2+2x
x³(x-2)-x(x-2)=0
(x-2)(x³-x)=0
(x-2)x(x²-1)=0
x(x-1)(x+1)(x-2)=0
x=0 v x=-1 v x=1 v x=2
w(x)=x⁴-2x³-x²+2x
w(x)=0
x⁴-2x³-x²+2x=0 wylaczamy x przed nawias
x(x³-2x²-x+2)=0 grupujemy wyrazy
x[x²(x-2)-(x-2)]=0
x[(x-2)(x²-1)]=0 stosujemy wzor a² - b²=(a-b)(a+b)
x(x-2)(x-1)(x+1)=0
x=0 v x-2=0 v x-1=0 v x+1=0
x=0 v x=2 v x=1 v x= -1
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w(x)=x4-2x3-x2+2x
0=x4-2x3-x2+2x
x³(x-2)-x(x-2)=0
(x-2)(x³-x)=0
(x-2)x(x²-1)=0
x(x-1)(x+1)(x-2)=0
x=0 v x=-1 v x=1 v x=2
w(x)=x⁴-2x³-x²+2x
w(x)=0
x⁴-2x³-x²+2x=0 wylaczamy x przed nawias
x(x³-2x²-x+2)=0 grupujemy wyrazy
x[x²(x-2)-(x-2)]=0
x[(x-2)(x²-1)]=0 stosujemy wzor a² - b²=(a-b)(a+b)
x(x-2)(x-1)(x+1)=0
x=0 v x-2=0 v x-1=0 v x+1=0
x=0 v x=2 v x=1 v x= -1