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1.6y^2-11y-10
2.5x^5-15x^3y-20xy^2
人气:463 ℃ 时间:2020-04-18 00:27:28
解答
6y^2-11y-10
=(2y-5)(3y+2)
5x^5-15x^3y-20xy^2
=5x(x^4-3x^2y-4y^2)
=5x(x^2+y)(x^2-4y)
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