问题
填空题
(1)当x______时,
(2)当x______时,(x+5)0=1有意义; (3)当x______时,(x+5)-2=1有意义. |
答案
(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.
(1)当x______时,
(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.