Вправи 201 - 342 » 269

269. Спростіть вираз: 1) 3a–3 • 4a–4 = 12a–7; 2) (10b^(-4))/(15b^(-5) ) = 2b/3; 3) (2c–6)4 = 16c–24; 4) m–2n • mn–2 = m–1n–1; 5) abc–1 • ab–1c = a2b0c0 = a2; 6) (kp^(-6))/(k^4 p^4 ) = 1/(k^4 p^10 ); 7) (c–6d2)–7 == c42d–14; 8) 1/3a–3b–6 • 6/7a7b4 = 2/7a4b–2; 9) 0,2c–3d5 • 1,5c–2d–5 = 0,3c–5d0 = 0,3c–5.