Jawabanmu

2014-09-04T22:35:01+07:00
2014-09-04T22:36:00+07:00
(2x-y)³= (2x-y) x (2x-y) x (2x-y) = (2x²-4xy+2y) x (2x-y) = 4x³-8x²y+4xy -2x²y+4xy²-2y² = 4x²-10x²y+4xy+4xy²-2y²

Mohon Koreksinya