求下列各式中的x:
(1)x2-25=0;
(2)8x3+1=0。
解:(1)x=±5;
(2)x=。
. He is too tired ________ any longer.
A.not to walk
B.to walk
C.walking
D.not walking
(2003?镇江)(1)计算:(x+1)2= ;
(2)分解因式:x2﹣9= .