Задачі і вправи для повторення » 16

16. Запишіть у вигляді степеня з основою 3: 1) 9–5 • 37 = (32)–5 • 37 = 3–10 • 37 = 3–3; 2) 272 • 9–7 = (33)2 • (32)–7 = 36 • 3–14 = 3–8; 3) (9–2)3 • (244)–1 = 9–6 • 27–4 = (32)–6 • (33)–4 = 3–12 • 3–12 = 3–24. 4) (812)–9 • (9–2)–3 = 81–18 • 96 = (34)–18 • (32)6 = 3–72 • 312 = 3–60; 5) 27–20 : (9–10)3 = (33)–20 : 9–30 = 3–60 : (32)–30 = 3–60 : 3–60 = 1; 6) 81–5 : 320 = (34)–5 : 320 = 3–20 : 320 = 3–40.