Jawabanmu

2014-08-10T16:37:10+07:00
-9 ya kalo nggak salah
= (2-3) (2.3+3) 
= (2-3) (6+3)
= 12 + 6 - 18 - 9
= -9
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2014-08-10T16:38:06+07:00
Kalau t=3, masukin aja t nya ke dalem soalnya, jadi kyk gini
(2-3) x (2 x 3 + 3 ) = -1 x (6+3) = -1 x 9 = -9 


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