Question

(4 supra noua) totul la x+1 ori (27 supra8) totul la x = 2 supra 3

Answer 1

(4/9)^x+1 • (27/8)^x = 3/2

(2/3)^x+2 • (3/2)^3x = (2/3)^1

(2/3)^x+2 • (2/3)^-3x = (2/3)^1

(2/3)^-x+2 = (2/3)^1

-x+2=1

-x = 1-2

-x = -1

x = 1