Jawabanmu

2014-09-08T16:13:46+07:00
5 + 4(x-1)(x+3) = 5 + 4 (x² + 2x -3) = 5 + 4x² + 8x -12 = 4x² + 8x -7
2014-09-08T16:17:17+07:00