Mathematics
Senior High
Resolved
赤線のところがなぜそうなるのか分かりません
教えていただきたいです🙇🏻♀️
(4) log 0.225
(4) x=logo.225 とおくと 0.2*=25
よって
(1)=55
=52 すなわち 552
ゆえに x=-2 すなわち 10g0.225=-2
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