Question

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

Answer 1

((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