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合并同类项:6x^2y+2xy-3x^2y^2-7x-5yx-4y^2x^2-6x^2y
人气:277 ℃ 时间:2019-08-20 21:02:13
解答
6x^2y+2xy-3x^2y^2-7x-5yx-4y^2x^2-6x^2y
=6x^2y-6x^2y +2xy-5yx-3x^2y^2-4y^2x^2-7x
=-3xy-7x^2y^2-7x
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