Mathematics
Senior High
Resolved
なぜ青のマーカーの式から緑のマーカーの式のようになるのかが分かりません。
解説お願いします🙇
3
5
-log:3 log:3
7
log₂3.
log23 2log23)
35
3
9
1
(3) (5)-(log: 3+ log: 25) logs 9 logs 3
log, 25
(与式)=
2
= (log53+log53)
1
2log53
log, 3
= 2log5 3
3
2log5 3
=-3
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