Jawabanmu

2014-01-28T21:21:27+07:00
2x^2 - 7x + 6 = 0
x^2 - 7x + 12 = 0
(x-3) (x-4) = 0
X1 = 3/2 = 1,5    X2 = 4/2 = 2

a. x1 - 5 = 1,5 - 5 = -3,5
   x2 - 5 = 2 - 5 = -3
b. 2.x1 = 2 (1,5) = 3
   3.x2 = 3 (2) = 6
c. x1 + 3 = 1,5 + 3 = 4,5
   x2 - 5 = 2 - 5 = -3
d. x1/x2 = 1,5/2 = 0,75
  x2/x1 = 2/1,5 = 1,3

persamaan kuadrat barunya yg mana ya?