ГДЗ Алгебра 9 клас Істер НУШ

12. Обчисліть:

1) 2–3 = 1/2^3 = 1/8;
2) (–5)–2 = 1/((-2)^2 ) = 1/25;
3) (–1)–11 = 1/〖(-1)〗^11 = –1;
4) 15–1 = 1/15^1 = 1/15;
5) 48 • 4–10 = 48–10 = 4–2 = 1/4^2 = 1/16;
6) 7–1 : 7 = 7–1–1 = 7–2 = 1/7^2 = 1/49.
7) 9^(-4)/9^(-5) = 9^5/9^4 = 9;
8) ((1/10)–3)–1 = (1/10)3 = 1/1000.