Ответы и объяснения

2013-06-08T13:03:32+04:00

(4/9)^x*(27/8)^x-1 = 1; (4/9)^x*(27/8)^x/(27/8) = 1; (4/9)^x*(27/8)^x = 27/8; (4/9*27/8)^x = 27/8; (4*27/9*8)^x = 27/8; (108/72)^x = 27/8; (108/36/72/36)^x = 27/8; (3/2)^x = 27/8; (3/2)^x = 3^3/2^3; (3/2)^x = (3/2)^3; x = 3 Ответ: 3.