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y = 5-2x
x²-6x - y +8 = 0
x²-6x - (5-2x)+8 = 0
x²-6x -5 +8 +2x = 0
x² -4x +3 = 0
(x-1) (x-3) = 0
x1 = 1 atau x =3
Hp {1,3}
y = x² - 6x + 8
2x + y - 5 = 0
y = -2x + 5
x² - 6x + 8 = -2x + 5
x² - 6x + 2x + 8 - 5 = 0
x² - 4x + 3 = 0
(x - 3) (x - 1) = 0
x = 3,x = 1
untuk x = 3, y = -1
x = 1, y = 3
maka HP dari persamaan tersebut yaitu {3,-1} dan {1,3}