tentukan nilai x dari persamaan berikut 1. 2^x+5= akar 8^x

Materi : Persamaan eksponen

2^(x + 5) = √8^x
2^(x + 5) = 8^1/2.x
2^(x + 5) = 2^(3(1/2.x))
2^(x + 5) = 2^3/2.x
x + 5 = 3/2 x
x - 3/2 x = -5
2x/2 - 3/2 x = -5
-x/2 = -5
-x = -10
x = 10