题目内容
计算(1)log224+lg
+log3
+lg2-log23
(2)(
×
)6-(
)-
-(-8)0.
| 1 |
| 2 |
| 27 |
(2)(
| 3 | 3 |
| 2 |
| 1 |
| 9 |
| 3 |
| 2 |
(1)log224+lg
-log3
+lg2-log23
=(log224-log23)+(lg
+lg2)-log33
=log28+lg1-
=
(2)(
×
)6-(
)-
-(-8)0
=(3
×2
)6-(3-2)-
-1
=9×8-27-1
=44.
| 1 |
| 2 |
| 27 |
=(log224-log23)+(lg
| 1 |
| 2 |
| 3 |
| 2 |
=log28+lg1-
| 3 |
| 2 |
| 3 |
| 2 |
(2)(
| 3 | 3 |
| 2 |
| 1 |
| 9 |
| 3 |
| 2 |
=(3
| 1 |
| 3 |
| 1 |
| 2 |
| 3 |
| 2 |
=9×8-27-1
=44.
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