题目内容
若x=log43,(2x-2-x)2=______.
因为x=log43=
log23=log2
,
所以(2x-2-x)2=(2log2
-2-log2
)2
=(
-
)2=3-2
×
+
=
.
故答案为
.
| 1 |
| 2 |
| 3 |
所以(2x-2-x)2=(2log2
| 3 |
| 3 |
=(
| 3 |
| 1 | ||
|
| 3 |
| 1 | ||
|
| 1 |
| 3 |
| 4 |
| 3 |
故答案为
| 4 |
| 3 |
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