Jawabanmu

2014-09-12T19:02:32+07:00
Kaliin aja gan..
(2-6t)(2t+3)
=4t+6-12t^2-18t    | jika t = 3
=4(3)+6-12(3)^2-18(3)
=12+6-108-54
=-144
2014-09-12T19:02:46+07:00
(2-6(3)) (2(3)+3) = (2-18) (6+3) = 12+ 6-168+54 = -96