题目内容
计算:
(1)(2
)
-(-9.6)0-(3
)-
+(1.5)-2;
(2)lg25+lg2lg50+21+
log25.
(1)(2
| 1 |
| 4 |
| 1 |
| 2 |
| 3 |
| 8 |
| 2 |
| 3 |
(2)lg25+lg2lg50+21+
| 1 |
| 2 |
(1)原式=(
)
-1-(
)-
+(
)-2
=
-1-(
)-2+(
)-2
=
.
(2)原式=lg25+2lg2lg5+lg22+21•2
log25
=1+2
.
| 9 |
| 4 |
| 1 |
| 2 |
| 27 |
| 8 |
| 2 |
| 3 |
| 3 |
| 2 |
=
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
=
| 1 |
| 2 |
(2)原式=lg25+2lg2lg5+lg22+21•2
| 1 |
| 2 |
=1+2
| 5 |
练习册系列答案
相关题目