Jawabanmu

2014-09-09T16:12:48+07:00
(2y + 3) (2y - 3)
= 2y + 2y + 3 - 3
= 4y

kalau ga salah .-.
2014-09-09T16:18:21+07:00
(2y+3)(2y-3) = 2y kuadrat -6y +6y-3 kuadrat
= 2y kuadrat - 9