Jawabanmu

2014-08-21T21:41:46+07:00
(-2/3)^4x (1/2-1/6)^2
(-2/3)^4
 x (3/6-1/6)^2
(-2/3)^4
 x (2/6)^2
16/81 x 4/36
64/2916
16/729