Jawabanmu

2014-09-04T17:03:58+07:00
14x kuadrat + 35x -35
2014-09-04T17:05:42+07:00
2x (7x+5) + 5 (5x-7)= 14xkuadrat+10x+25xkuadrat-35
                             = 39 kuadrat+10x-35