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The solutions of x2 - 2x - 1 = 0 are the points of intersection...

Mathematics
JAMB 1988

The solutions of x2 - 2x - 1 = 0 are the points of intersection of two graphs. if one of the graphs is y = 2 + x - x2, find the second graph

  • A. y = 1 - x
  • B. y = 1 + x
  • C. y = x - 1
  • D. y = 3x + 3
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Correct Answer: Option A
Explanation

The second graph is 

\((x^{2} - 2x - 1) + (2 + x - x^{2})\)

= \(1 - x\)


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