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x^2 + x -6 = 0
(x-3)(x+2) = 0
x = 3 atau x = -2
y = -x+5
unt x = 3
y = -3 +5
= 2
unt x = -2
y = -x+5
=2 +5
= 7
jadi titik potongnya di titik (3,2) dan (-2,7)