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Sunday, 08 November 2026
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Mathematics Past Questions and Answers

Jamb 1986 Mathematics Questions

Question 21:
Solve the equation 3x2 + 6x - 2 = 0
  • A X = -1 \(\pm\) \(\frac{\sqrt{3}}{3}\)
  • B X = -1 \(\pm\) \(\frac{\sqrt{15}}{3}\)
  • C X = -2 \(\pm\) 2
  • D X = 3 \(\pm\) \(\frac{\sqrt{3}}{15}\)
View Answer & Explanation
Question 22:
Simplify \(\frac{1}{5x + 5}\) + \(\frac{1}{7x+ 7}\)
  • A \(\frac{12}{35x + 1}\)
  • B \(\frac{1}{35(x + 1)}\)
  • C \(\frac{12x}{35(x + 7)}\)
  • D \(\frac{12}{35x + 35}\)
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Question 23:
Factorize (4a + 3)2 - (3a - 2)2
  • A (a + 1)(a + 5)
  • B (a - 5)(7a - 1)
  • C (a + 5)(7a + 1)
  • D A(7a + 1)
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Question 24:
If \(5^{(x + 2y)} = 5\) and \(4^{(x + 3y)} = 16\), find \(3^{(x + y)}\).
  • A 7
  • B 1
  • C 3
  • D 27
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Question 25:
Simplify \(\frac{1}{x - 2}\) + \(\frac{1}{x + 2}\) + \(\frac{2x}{x^2 - 4}\)
  • A \(\frac{2x}{(x - 2)(x + 2)(x^2 - 4)}\)
  • B \(\frac{2x}{x^2 - 4}\)
  • C \(\frac{x}{x^2 - 4}\)
  • D \(\frac{4x}{x^2 - 4}\)
View Answer & Explanation