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(1)ac分之2bc (2)xy²分之(x+y)y (3)(x+y)^2/x^2+xy (4)(x-y)^2/x^2-y^2
人气:178 ℃ 时间:2019-10-18 02:22:03
解答
2b/c(x+y)/(xy)(x^3y+x^2+2xy+y^2)/(x^2) (x^2-2xy+y^2-x^2y^2)/(x^2)
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