题目内容
求值:
(1)lg500+lg
-
lg64+50(lg2+lg5)2
(2)(2
)
-(-2008)0-(3
) -
+(
)-2.
(1)lg500+lg
| 8 |
| 5 |
| 1 |
| 2 |
(2)(2
| 1 |
| 4 |
| 1 |
| 2 |
| 3 |
| 8 |
| 2 |
| 3 |
| 3 |
| 2 |
(1)lg500+lg
-
lg64+50(lg2+lg5)2
=(lg100+lg5)+(lg8-lg5)-
lg26+50
=(2+lg5)+(3lg2-lg5)-3lg2+50=52;
(2)(2
)
-(-2008)0-(3
) -
+(
)-2
=(
)
-1-(
)-
+
=
-1-
+
=
.
| 8 |
| 5 |
| 1 |
| 2 |
=(lg100+lg5)+(lg8-lg5)-
| 1 |
| 2 |
=(2+lg5)+(3lg2-lg5)-3lg2+50=52;
(2)(2
| 1 |
| 4 |
| 1 |
| 2 |
| 3 |
| 8 |
| 2 |
| 3 |
| 3 |
| 2 |
=(
| 9 |
| 4 |
| 1 |
| 2 |
| 27 |
| 8 |
| 2 |
| 3 |
| 4 |
| 9 |
=
| 3 |
| 2 |
| 4 |
| 9 |
| 4 |
| 9 |
=
| 1 |
| 2 |
练习册系列答案
相关题目