7^4x7^-9...

grig9524 @grig9524

October 2021 1 8 Report

Вычислите:
1.
7^-7 / 7^4x7^-9

Answers & Comments

Эксперт5

Verified answer

$\frac{7^{-7}}{7^4*7^{-9}}= \frac{7^{-7}}{7^{4-9}}= \frac{7^{-7}}{7^{-5}}=7^{-7-(-5)}=7^{-7+5}=7^{-2}= \frac{1}{7^2}= \frac{1}{49}$

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