Jawabanmu

2014-03-23T18:54:04+07:00
B kuadrat - 4ac = 0
(m-2)kuadrat - 4.1.9 =0
m2 - 4m + 4 -36 =0
m2 - 4m -32 = 0
(m+4) (m-8) = 0
m+4=0 || m-8=0
m=-4 || m=8
2014-03-23T18:55:35+07:00
X² + (m - 2)x + 9 = 0
a = 1 , b = m-2 , c = 9
D = 0
b² - 4. a . c = 0
(m - 2)² - 4 . 1. 9 = 0
m² - 4m + 4 - 36 = 0
m² - 4m - 32 = 0
(m - 8) (m + 4) = 0
m = 8 atau m = -4