求数学大神!!!因式分解!!!急急急!!! 10
1个回答
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要么是6x^3+x^2-10x+3,要么是x^3+x^2-10x+8
6x^3+x^2-10x+3
=6x^3-6x^2+7x^2-7x-3x+3
=6x^2(x-1)+7x(x-1)-3(x-1)
=(x-1)(6x^2+7x-3)
=(x-1)(3x+1)(2x-3)
x^3+x^2-10x+8
=x^3-x^2+2x^2-2x-8x+8
=x^2(x-1)+2x(x-1)-8(x-1)x
=(x-1)(x^2+2x-8)
=(x-1)(x+4)(x-2)
6x^3+x^2-10x+3
=6x^3-6x^2+7x^2-7x-3x+3
=6x^2(x-1)+7x(x-1)-3(x-1)
=(x-1)(6x^2+7x-3)
=(x-1)(3x+1)(2x-3)
x^3+x^2-10x+8
=x^3-x^2+2x^2-2x-8x+8
=x^2(x-1)+2x(x-1)-8(x-1)x
=(x-1)(x^2+2x-8)
=(x-1)(x+4)(x-2)
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