Mathematics
Senior High

数学IIのlogの問題です。
4STEPの解答の転回早すぎて分かりません。
矢印の計算詳しく教えてくれませんか??

→>> =logs 54 5- 123 300 × 60² = log55-4 = -4 (3) 与式=10g5
4step 数学ii 指数関数と対数関数 対数とその性質 log

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