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Find the root of the equation 2x\(^2\) - 3x - 2 = 0

Mathematics
WAEC 1998

Find the root of the equation 2x\(^2\) - 3x - 2 = 0

  • A. x = -2 or 1/2
  • B. x = -2 or1
  • C. x = -2 or 2
  • D. x = -1 or 2
  • E. x = -1/2 or 2
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Correct Answer: Option E
Explanation

2x\(^2\) - 3x - 2 = 0

2x\(^2\) - 4x + x - 2 = 0

2x(x - 2) + 1(x - 2) = 0

(2x + 1)(x - 2) = 0

x = \(\frac{-1}{2}\) or x = 2


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JAMB CBT Software 2025 - Free Download
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