求函数f（x）=x^3-2x^2+2的零点我解到x^2(x-1)-(x-1)(x-2)

求函数f（x）=x^3-2x^2+2的零点我解到x^2(x-1)-(x-1)(x-2)
求函数f（x）=x^3-2x^2+2的零点
我解到x^2(x-1)-(x-1)(x-2)

求函数f（x）=x^3-2x^2+2的零点我解到x^2(x-1)-(x-1)(x-2)
x^2(x-1)-(x-1)(x-2)
=(x-1)[x^2-(x-2)]
=(x-1)(x^2-x+2)
零点:1
x^2-x+2
△