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Materi SPnLSubstitusikan Y pd pers 1 ke pers 2
x - 3 = x^2 - 9
0 = x^2 - x - 6
0 = (x - 3)(x + 2)
Jadi, x = 3 atau x = -2
Untuk x = 3, y = 3 - 3 = 0
Untuk x = -2, y = -2 - 3= -5
Jadi,
HP = {(3,0), (-2, -5)}