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.
,0.0256,(-5)2,212,0,1,10-4. 121 169
答
±
=±
121 169
;11 13
±
=±0.15;
0.0256
±
=±5;
(-5)2
±
=±26;
212
±
=0;
0
±
=±1;
1
±
=±10-2.
10-4