426 Вправа 426Алгебра 8 клас Бевз 2025 · § 9 · стор. 88

426. Обчисли.

а) ${\displaystyle 31^0+2^{-1}=}$${\displaystyle 1+\frac{1}{2}=}$${\displaystyle 1,5}$;

б) ${\displaystyle 3+3^{-1}=}$${\displaystyle 3+\frac{1}{3}=}$${\displaystyle 3\frac{1}{3}}$;

в) ${\displaystyle 2^2+2^{-2}=}$${\displaystyle 4+\frac{1}{4}=}$${\displaystyle 4\frac{1}{4}}$;

г) ${\displaystyle {(-1)}^{-4}=}$${\displaystyle \frac{1}{{(-1)}^4}=}$${\displaystyle 1}$.