Rozwiaż równanie
x³-x²-x+1=0
x²(x-1)-(x-1)=0
(x²-1)(x-1)=0
(x+1)(x-1)(x-1)=0
(x+1)(x-1)²=0
x=-1
x=1 (pierwiastek dwukrotny)
x²(x-1)-1(x-1)=0
x²-1=0 x-1=0
x²=1 x=1
x=1 lub x=-1
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x³-x²-x+1=0
x²(x-1)-(x-1)=0
(x²-1)(x-1)=0
(x+1)(x-1)(x-1)=0
(x+1)(x-1)²=0
x=-1
x=1 (pierwiastek dwukrotny)
x²(x-1)-1(x-1)=0
x²-1=0 x-1=0
x²=1 x=1
x=1 lub x=-1