Вправи 201 - 342 » 270
270. Спростіть вираз: 1) 2a–5b2 • 3a–2b–5 = 6a–7b–3; 2) (1/2mn–3)–2 = (1/2)–2 m–2n6 = 4m–2n6; 3) (3,6a^2 b)/(0,9a^3 b^(-3) ) = (4b^4)/a; 4) 0,8a–6b8 • 5a10 • b–8 = 4a4b0 = 4a4.
270. Спростіть вираз: 1) 2a–5b2 • 3a–2b–5 = 6a–7b–3; 2) (1/2mn–3)–2 = (1/2)–2 m–2n6 = 4m–2n6; 3) (3,6a^2 b)/(0,9a^3 b^(-3) ) = (4b^4)/a; 4) 0,8a–6b8 • 5a10 • b–8 = 4a4b0 = 4a4.