Brandon worked for hours after school________money for her education. A.making B.made C.to make D.having made 答案:C此题考查动词不定式作目的状语。 (1)计算: (2)求中x的值.
(1)0(2)x=
【解析】试题分析:(1)原式利用算术平方根,立方根计算即可得到结果;
(2)方程变形后,利用平方根定义开方即可求出解.
试题解析:【解析】
(1)原式=2+2﹣4=0;
(2)方程变形得:x2=,开方得:x=.