Jawabanmu

2014-05-31T19:34:53+07:00
D = 0
b² - 4ac = 0
(3k-5)² - 4 (k+1) (k-2) = 0
5k² - 26k - 33 = 0
(5k-11) (k-3) = 0
k = 11/5 atau k = 3