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Use the graph to answer the Question below What are the roots of the equation...

Mathematics
WAEC 2004
Use the graph to answer the Question below
What are the roots of the equation x2 + 3x - 4 = 0?
  • A. 1, 4
  • B. -1, -4
  • C. -1, 4
  • D. -4, 1
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Correct Answer: Option D
Explanation
x2 + 3x – 4 = 0 has roots value at the curve makes touches with the x – axis. The curve contact is at x = -4 and +1.
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