x^4-7x^2+6x因式分解?

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x^4-7x^2+6x因式分解?

x^4-7x^2+6x因式分解?
x^4-7x^2+6x因式分解?

x^4-7x^2+6x因式分解?
x^4-7x^2+6x
=x(x^3-7x+6)
=x[(x^3-1)-7x+7]
=x[(x-1)(x^2+x+1)-7(x-1)]
=x(x-1)(x^2+x+1-7)
=x(x-1)(x^2+x-6)
=x(x-1)(x+3)(x-2)

x^4-7x^2+6x
=x(x^3-7x+6)
=x(x^3-x^2+(x^2-7x+6))
=x(x-1)(x^2+x-6)
=x(x-1)(x-2)(x+3)

X^4-7X^2+6=(X^2-1)(X^2-6)=(X+1)(X-1)(X+√6)(X-√6)