x^3-4x^2+5x-2=0因式分解,怎么分啊
问题描述:
x^3-4x^2+5x-2=0因式分解,怎么分啊
答
x³-x²-(3x²-5x+2)=0
x²(x-1)-(3x-2)(x-1)=0
(x-1)(x²-3x+2)=0
(x-1)²(x-2)=0
x=1,x=2