найдите корень уровнения (1/16)^2x-9=（1/4）^x

((1/4)^2)^(2x-9) = (1/4)^x (1/4)^(2(2x-9)) = (1/4)^x 2(2x-9) = x 4x-18 = x 4x-x = 18 3x = 18 x = 18:3 х = 6