Mathematics
Senior High
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(3)のやり方が分かりません。解説お願いします
8 87. 次の式を簡単にせよ。
(1) log2 18 - 21log26+3log,4 55
* log2 10 - log, 10 - (log2 5 + log, 2)
B 88. log5 2
= a, log5 3 = 6, log3 7 = c とすると
(1) log, 0.15
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