Вправи для повторення розділу 1 » 76

76. Обчисліть: 1) 9–2 = 1/9^2 = 1/81; 3) (–5)–1 = 1/((-5)^1 ) = –1/5; 2) 4–1 = 1/4^1 = 1/4; 4) (1/8)–2 = (8/1)2 = 64; 5) 0,1–3 = (1/10)–3 = (10/1)3 = 1000; 6) (21/7)–1 = (15/7)–1 = 7/1; 7) 0,25–4 = (1/4)–4 = (4/1)4 = 256; 8) (–2,5)–3 = (–5/2)–3 = (–2/5)3 = –8/125.