求下列各数的平方根.121/169,0.0256,(-5)2,212,0,1,10-4.

问题描述:

求下列各数的平方根.

121
169
,0.0256,(-5)2,212,0,1,10-4

±

121
169
11
13

±
0.0256
=±0.15;
±
(-5)2
=±5;
±
212
=±26
±
0
=0;
±
1
=±1;
±
10-4
=±10-2