2x^4-x^3-6x^2-x+2

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2x^4-x^3-6x^2-x+2
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2x^4-x^3-6x^2-x+2
2x^4-x^3-6x^2-x+2

2x^4-x^3-6x^2-x+2
2x^4-x^3-6x^2-x+2
=2x^4-x³-6x²+3x-4x+2
=x³(2x-1)-3x(2x-1)-2(2x-1)
=(2x-1)(x³-3x-2)
=(2x-1)(x³-4x+x-2)
=(2x-1)[x(x-2)(x+2)+(x-2)]
=（2x-1）(x-2)(x²+2x+1)
=（2x-1）(x-2)(x+1)²


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