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题目
题型:解答题难度:简单来源:不详
(10分) 先化简,再求值:,其中
答案
时,原式
解析
解:原式··········································· 2分
··························································· 4分
···················································································· 8分
时,原式······························································· 10分
核心考点
试题【(10分) 先化简,再求值:,其中.】;主要考察你对分式方程的概念等知识点的理解。[详细]
举一反三
分式方程的解是(    )
A.B.
C.D.

题型:单选题难度:一般| 查看答案
先化简,再求值:
,其中
题型:解答题难度:简单| 查看答案
当x ________时,分式有意义.
题型:填空题难度:一般| 查看答案
的值均扩大为原来的2倍,则分式值保持不变的是 (    )
A.B.C.D.

题型:单选题难度:简单| 查看答案
(本题满分5分)
解方程:
题型:解答题难度:一般| 查看答案
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