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?

  • 1, 4
  • -1, -4
  • -1, 4
  • -4, 1 checkmark

The correct answer is: 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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