Jawabanmu

2014-09-04T18:07:50+07:00

3^{x+2} + (3^2)^{x-1} = 810

3^{x+2} + 3^{2x-2} = 810

pangkat -> x + 2 + 2x - 2 = 810
= 3x = 810
= x = 270