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Verified answer
Y = f(x) = x² + 5x - 14memotong sumbu x maka y = 0 sehingga diperoleh
x² + 5x - 14 = 0
(x + 7) (x - 2) = 0
x + 7 = 0
x = -7
dan
x - 2 = 0
x = 2
maka titiknya (2, 0) dan (-7, 0)