Jawabanmu

2014-08-31T08:10:37+07:00
2x-3+4x+5 = 2x+4x-3+5
6x+2
2014-08-31T08:11:04+07:00
(2x-3)(4x+5)
8x^ + 10x -12x -15
8x^ -2x - 15