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[1-(2)/(x+1)²÷(x-1)/(x+1)晕......貌似写错了是1-(2)/(x+1)²÷(x-1)/(x+1)
题目详情
[1-(2)/(x+1)²÷ (x-1)/(x+1)
晕 ......
貌似写错了 是 【1-(2)/(x+1)】²÷ (x-1)/(x+1)
晕 ......
貌似写错了 是 【1-(2)/(x+1)】²÷ (x-1)/(x+1)
▼优质解答
答案和解析
把1通分,成(x+1)/(x+1),然后中括号内就成了(x-1)/(x+1),然后÷ (x-1)/(x+1)成×(x+1)/(x-1),也就是结果就是(x-1)/(x+1)
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