x3+5x-6

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x3+5x-6x3+5x-6x3+5x-6x^3+5x-6=x^3-x^2+x^2+5x-6=x^2(x-1)+(x+6)(x-1)=(x^2+x+6)(x-1)你好:x^3+5x-6=0=(x^3-

x3+5x-6
x3+5x-6

x3+5x-6
x^3+5x-6
=x^3-x^2+x^2+5x-6
=x^2(x-1)+(x+6)(x-1)
=(x^2+x+6)(x-1)

你好:
x^3+5x-6=0
=(x^3-1)+(5x-5)
=(x-1)(x^2+x+1)+5(x-1)
=(x-1)(x^2+x+6)=0

(x-1)(x+6)

是x²+5x-6吧?
x²+5x-6
=(x+6)(x-1)