x3-9x2+26x-24怎么解,具体点.

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x3-9x2+26x-24怎么解,具体点.

x3-9x2+26x-24怎么解,具体点.
x3-9x2+26x-24怎么解,具体点.

x3-9x2+26x-24怎么解,具体点.
x^3-9x^2+26x-24
=(x^3-3x^2)-(6x^2-26x+24)
=x^2(x-3)-2(3x^2-13x+12)
=x^2(x-3)-2(3x-4)(x-3)
=(x^2-6x+8)(x-3)
=(x-2)(x-4)(x-3)