Вправи 501 - 600 » 516

Спростіть вираз: 1) 0,42ac3 ∙ 13/7a4c2 = 0,42 ∙ 10/7ac3 ∙ a4c2 = 0,6a5c5; 2) 1,2xyz ∙ 21/6x5y6 = 1,2 ∙ 13/6xyz ∙ x5y6 = 2,6x6y7z; 3) –21/3m2np3 ∙ (3/7np4)2 = –7/3m2np3 ∙ 9/49n2p8 = –3/7m2n3p11; 4) (11/2x2y3)5 ∙ 16/27x8y2 = 243/32x10y15 ∙ 16/27x8y17 = 9/2x18y17 = 4,5x18y17.