Question on: JAMB Mathematics - 2013
A
y = x2 - x - 2
B
y = x2 - 3x + 2
C
y = x2 - x - 1
D
y = x2 + x - 2
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Correct Option: A
The graph crosses the x-axis at x = -1 and x = 2
Thus, x + 1 = 0 and x - 2 = 0
x2 - 2x + x - 2 = 0
x2 - x - 2 = 0
giving y = x2 - x - 2
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