题目内容
计算下列各式
(Ⅰ)(lg2)2+lg5•lg20-1
(Ⅱ)(
×
)6+(
)
-(-2006)0.
(Ⅰ)(lg2)2+lg5•lg20-1
(Ⅱ)(
| 3 | 2 |
| 3 |
2
|
| 4 |
| 3 |
(Ⅰ)原式=lg22+(1-lg2)(1+lg2)-1=lg22+1-lg22-1=0
(Ⅱ)原式=(2
×3
)6+(2
)
-1
=22×33+2-1=109.
(Ⅱ)原式=(2
| 1 |
| 3 |
| 1 |
| 2 |
| 3 |
| 4 |
| 4 |
| 3 |
=22×33+2-1=109.
练习册系列答案
相关题目