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b. akar-akarnya saling berkebalikan berarti x1 = 1/x2 atau x1x2 = 1
x1x2 = c/a
1 = m/2
m = 2
a. akar-akarnya saling berlawanan berarti x1=-x2 atau x1 + x2 = 0
x1 + x2 = -b/a
0 = (2m+1)/2
2m + 1 = 0
2m = - 1
m = -1/2
ax² + bx + c = 0
2x² + (2m+1)x + m = 0
maka 2m + 1= 0
m=-1/2
b. berlawanan bila a=c
m= 2