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f(x) = mx² + (4m -1)x + 4m + 2
a = m
b = 4m - 1
c = 4m + 2
D <0
b² - 4ac < 0
(4m - 1)² - 4.m.(4m + 2) < 0
16m² - 8m + 1 - 16m² - 8m < 0
- 16m + 1 < 0
-16m < -1
m >
mohon dikoreksi lagi .. semoga membantu..
D=b²-4ac<0
(4m-1)²-4 . m . (4m+2)<0
16m²-8m+1-16m²-8m<0
-16m+1<0
-16m<-1
16m>1
m>1/16