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MATHEMATICS

JAMB 2013 - Question 17

Mathematics 2013 JAMB Past Questions - Question 17: The graph above is correctly represented by

The graph above is correctly represented by

A: y=x²-x-1

B: y=x²+x-2

C: y=x²-x-2

D: y=x²-3x+2

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Correct Answer

Explanation

the graph crossess the x -axis at x = - 1 and x =2.thus, x++1=0 and x-2=0(x+1) (x-2)=0xsup2 - 2x+x-2 = 0giving y = xsup2- x-2