424 Вправа 424Алгебра 8 клас Бевз 2025 · § 9 · стор. 88

424. Як записати вираз без знаменника?

${\displaystyle \frac{1}{a^n}=}$${\displaystyle a^{-n}}$:

${\displaystyle \frac{1}{2^3}=}$${\displaystyle 2^{-3}}$;

${\displaystyle \frac{1}{3^2}=}$${\displaystyle 3^{-2}}$;

${\displaystyle \frac{1}{5}=}$${\displaystyle 5^{-1}}$;

${\displaystyle \frac{1}{7^4}=}$${\displaystyle 7^{-4}}$;

${\displaystyle \frac{1}{a^2}=}$${\displaystyle a^{-2}}$;

${\displaystyle \frac{1}{c^5}=}$${\displaystyle c^{-5}}$.