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x^4-3x^3+x^2y+2x^2-2xy因式分解
人气:424 ℃ 时间:2020-03-24 12:13:22
解答
x^4-3x^3+x^2y+2x^2-2xy=(x^4-3x^3+2x^2)+(x^2y-2xy)
=x^2(x-1)(x-2)+xy(x-2)
=x(x-2)(x^2-x+y)
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