题目内容
计算：(
)
+lg
+lg
+2lo
+ln1=______．
| 27 |
| 8 |
| 1 |
| 3 |
| 2 |
| 5 |
| g | 32 |
由指对的运算性质知
(
)
+lg
+lg
+2lo
+ln1
=
+
lg2+
lg 5+3
=
+
+3
=5，
故答案为5．
(
| 27 |
| 8 |
| 1 |
| 3 |
| 2 |
| 5 |
| g | 32 |
=
| 3 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
=
| 3 |
| 2 |
| 1 |
| 2 |
=5，
故答案为5．
练习册系列答案
相关题目