Jawabanmu

2014-05-14T15:24:08+07:00
px² + qx + 1 - p = 0
1/x1 = x2
x1x2 = 1
1 - p = 1
  p
p = 1 - p
2p = 1
p = 1/2

(1/2)x² + qx + 1/2 = 0
x² + 2qx + 1 = 0
x1 + x2 = x1x2
-2q = 1
q = -1/2