问题
选择题
下列运算正确的是( )
|
答案
A、错误,∵2a+a=3a;
B、错误,∵
=(-4)×(-9)
×4
,被开方数不能是负数;9
C、错误,∵(3a2)3=27a6;
D、正确,符合底数幂的乘法法则.
故选D.
下列运算正确的是( )
|
A、错误,∵2a+a=3a;
B、错误,∵
=(-4)×(-9)
×4
,被开方数不能是负数;9
C、错误,∵(3a2)3=27a6;
D、正确,符合底数幂的乘法法则.
故选D.
An analyst does research about book value and gathers the following information from a company's balance sheet (in millions):
Shareholders' equity | $150 |
Preferred stock | $25 |
Total liabilities | $50 |
Issued common shares | 75 |
Repurchased common shares | 20 |
A. $1.67
B. $2.27
C. $2.73