Jawabanmu

2014-01-22T19:36:04+07:00
A= (m-1)
b= 4
c= 2m
D=0
b^2 -4ac=0
4^2-4.(m-1).2m=0
16-(4m+4).2m =0
16- 8m^2+8m =0
8m^2 -8m-16 = 0 sama" di bagi 8
m^2-m-2= 0
(m+1)(m-2)
m1 = -1
m2 = 2
4 2 4