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x^2 -3x + 2x + 2 - 8 = 0
x^2 - x - 6 = 0
(x - 3)(x+2) = 0
x = 3 atau x = -2
Utk x = 3 maka y = -2.3 + 8 = 2
x = - 2 maka y = -2. (-2) + 8 = 12
Hp = {(3,2), (-2, 12)