题目内容
不用计算器计算下列各式的值:
(1)(a
b
)(-3a
b
)÷(
a
b
);
(2)log3
+lg25+lg4-3log32.
(1)(a
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 6 |
| 5 |
| 6 |
(2)log3
| ||
| 3 |
(1)原式=-9a
+
-
b
+
-
=-9ab0=-9a.
(2)原式=log33-
+lg(25×4)-2=-
+2-2=-
.
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 6 |
| 1 |
| 2 |
| 1 |
| 3 |
| 5 |
| 6 |
(2)原式=log33-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
练习册系列答案
相关题目