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分解因式4xy^2-4x^2y-y*y*y
人气:136 ℃ 时间:2020-06-18 12:48:51
解答
4xy^2-4x^2y-y*y*y
=4xy^2-4x^2y-y^3
=y(4xy-4x^2-y^2)
=-y(4x^2-4xy+y^2)
=-y(2x-y)^2
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