题目内容
计算(1)(lg2)2+lg5•lg20-1+2log525+3log264-8ln1
(2)(
×
)6+(
)
-4(
)-
-
×80.25-(-2005)0.
(2)(
| 3 | 2 |
| 3 |
2
|
| 4 |
| 3 |
| 16 |
| 49 |
| 1 |
| 2 |
| 4 | 2 |
(1)原式=(lg2)2+(1-lg2)(1+lg2)-1+2×2+3log226-0
=(lg2)2+1-(lg2)2-1+4+18=22
(2)原式=(2
×3
)6+(2
×2
)
-4×
-2
×2
-1
=22×33+2-7-2-1=100
=(lg2)2+1-(lg2)2-1+4+18=22
(2)原式=(2
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 4 |
| 3 |
| 7 |
| 4 |
| 1 |
| 4 |
| 3 |
| 4 |
=22×33+2-7-2-1=100
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