题目内容
(1)log363-2log3
;
(2)
•
÷a6.
| 7 |
(2)
| 3 | a5 |
| 3 | a7 |
(1)原式=log363-log3(
)2=log363-log37=log3
=log39=2.
(2)原式=a
×a
×a-6=a
+
-6=a-2=
.
| 7 |
| 63 |
| 7 |
(2)原式=a
| 5 |
| 3 |
| 7 |
| 3 |
| 5 |
| 3 |
| 7 |
| 3 |
| 1 |
| a2 |
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