题目内容
(1)当x______时,
=-2有意义;
(2)当x______时,(x+5)0=1有意义;
(3)当x______时,(x+5)-2=1有意义.
-4 |
x0+1 |
(2)当x______时,(x+5)0=1有意义;
(3)当x______时,(x+5)-2=1有意义.
(1)由题意得:x0+1=2,
解得x0=1,
则x≠0;
(2)由题意得:x+5≠0,
解得x≠-5;
(3)由题意得:x+5≠0,
解得x≠-5;
故答案为:≠0;≠-5;≠-5.
解得x0=1,
则x≠0;
(2)由题意得:x+5≠0,
解得x≠-5;
(3)由题意得:x+5≠0,
解得x≠-5;
故答案为:≠0;≠-5;≠-5.
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