25^2-log(osn5)2 + 7^-log(osn7)3...

dinalitpin @dinalitpin

July 2022 1 14 Report

25^2-log(osn5)2 + 7^-log(osn7)3

Answers & Comments

sergeevaolga5

Verified answer

$25^{2-log_52}+7^{-log_73}=5^{2(2-log_52)}+\frac{1}{7^{log_73}}=\\\\=5^{4-2log_52}+\frac{1}{3}= \frac{5^4}{5^{2log_52}}+\frac{1}{3}=\\\\=\frac{625}{5^{log_54}}+\frac{1}{3}=\frac{625}{4}+\frac{1}{3}=\frac{625*3+4}{4*3}=\frac{1879}{12}=156\frac{7}{12}$

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