7x^3-6x^2-7x+6 因式分解

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7x^3-6x^2-7x+6因式分解7x^3-6x^2-7x+6因式分解7x^3-6x^2-7x+6因式分解7x^3-6x^2-7x+6=(7x^3-6x^2)-(7x-6)=x^2(7x-6)-(7

7x^3-6x^2-7x+6 因式分解
7x^3-6x^2-7x+6 因式分解

7x^3-6x^2-7x+6 因式分解
7x^3-6x^2-7x+6=(7x^3-6x^2)-(7x-6)
=x^2(7x-6)-(7x-6)=(7x-6)(x^2-1)
=(7x-6)(x+1)(x-1)

6x^4+7x^3-36x^2-7x+6
=(6x^4+x^3-x^2)+(6x^3+x^2-x)+(-36x^2-6x+6)
=x^2(6x^2+x-1)+x(6x^2+x-1)-6(6x^2+x-1)
=(6x^2+x-1)(x^2+x-6)
=(2x+1)(3x-1)(x-2)(x+3).
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