题目内容
计算:
(1)2
×
×
=______
(2)log3
+2lg0.5+lg4+5log52=______.
(1)2
3 |
6 | 12 |
3 | 1.5 |
(2)log3
1 | ||
|
(1)原式=2× 3
×12
×(
)
=2×3
×3
×2
×3
×2-
=21+
-
×3
+
+
= 2×3=6
(2)原式=log33-4+lg
+lg4+2=-4-lg4+lg4+2=-2
1 |
2 |
1 |
6 |
3 |
2 |
1 |
3 |
1 |
2 |
1 |
6 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
2 |
1 |
6 |
1 |
3 |
(2)原式=log33-4+lg
1 |
4 |
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