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Mathematics 1986 JAMB Past Questions

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21

Solve the equation 3x\(^2\) + 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 & Discuss (4) JAMB 1986
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. \(\frac{12}{35x + 35}\)
View Answer & Discuss (3) JAMB 1986
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)
View Answer & Discuss (1) JAMB 1986
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24

If \(5^{(x + 2y)} = 5\) and \(4^{(x + 3y)} = 16\), find \(3^{(x + y)}\).

  • A. 7
  • B. 1
  • C. 3
  • D. 27
View Answer & Discuss (5) JAMB 1986
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 & Discuss JAMB 1986
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