tolong dong yg bisa jawab.......

2^9x4^-3:2^2 = 2^9x1/4^3: 2^2 = 2^9/(2^2)^3: 2^2 = 2^9/2^6 :2^2 = 2^9-6:2^2 = 2^3/2^2 = 2^3-2= 2^1 = 2