题目内容
(
)-
+lg25+lg2•lg50=______.
| 27 |
| 64 |
| 1 |
| 3 |
(
)-
+lg25+lg2•lg50
=[(
)3]-
+lg25+lg2(lg2+2lg5)
=(
)-1+(lg5+lg2)2
=
+1
=
.
故答案为:
.
| 27 |
| 64 |
| 1 |
| 3 |
=[(
| 3 |
| 4 |
| 1 |
| 3 |
=(
| 3 |
| 4 |
=
| 4 |
| 3 |
=
| 7 |
| 3 |
故答案为:
| 7 |
| 3 |
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