已知1/x+1/y=5 求2x-3xy+2y/x+2xy+y
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已知1/x+1/y=5 求2x-3xy+2y/x+2xy+y
已知1/x+1/y=5.通分 可得x+y=5xy.
(2x-3xy+2y)/(x+2xy+y)化简得7xy/7xy=1
注意问的规范点2x-3xy+2y/x+2xy+y 忘记加括号了啊
(2x-3xy+2y)/(x+2xy+y)化简得7xy/7xy=1
注意问的规范点2x-3xy+2y/x+2xy+y 忘记加括号了啊
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