题目内容
计算:(1)
;(2)0.027-
-(-
)-2+2
-
-(
-1)0.
| 2lg2+lg3 | ||||
1+
|
| 1 |
| 3 |
| 1 |
| 7 |
| 7 |
| 9 |
| 1 |
| 2 |
| 2 |
(1)原式=
=
=1
(2)原式=(0.3)3×(-
)-72+(
)2×( -
)-1=
-49+
-1=-
| lg4+lg3 |
| lg10+lg0.6+lg2 |
| lg12 |
| lg12 |
(2)原式=(0.3)3×(-
| 1 |
| 3 |
| 5 |
| 3 |
| 1 |
| 2 |
| 10 |
| 3 |
| 3 |
| 5 |
| 691 |
| 15 |
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