Mathematics
Senior High
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(1)の問題で、解説の1行目から2行目にいく過程を教えてください。なぜこの式になるか分かりません( ˊᵕˋ ;)💦
312、次の式を計算せよ。
g 1) (ogs5十log。25)(1ogs9十logzs3)
(2) log43・1og。25・1ogs8
(
(3) 1ogz10・1og。10一(1ogz5十logs2)
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