Решите уравнение: 3*3^2x - 7*12^x + 4*4^2x = 0

3*(3^2x) - 7*912^x) + 4*04^2x) = 0 3*(3^2x) - 7*(3^x)*(4^x) + 4*(4^2x) = 0   / (4^2x)3*[(3/4)^2x]   - 7*[(3/4)^x] + 4 = 0(3/4)^x = z 3*(z^2) - 7z + 4 = 0 d = 49 - 4*3*4 = 1 z1 = (7 - 1)/6 z1 = 1 z2 = (7 +1)/6 z2 = 4/3 1)   (3/4)^x = 1 (3/4)^x =  (3/4)^0  x1 = 0 2)  (3/4)^x = 4/3 (3/4)^x =  (3/4)^(-1) x2 = -1

q=cm(t2 - t1)

t2 - t1=  q/cm

t2= q/cm+t1