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Mathematics 1987 JAMB Past Questions

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21

Find the values of y which satisfy the simultaneous equations x + y = 5, x2 - 2y2 = 1

  • A. -12, -2
  • B. -12, 12
  • C. -12, +2
  • D. 2, -2
View Answer & Discuss (4) JAMB 1987
22
An (n - 2)2 sided figure has n diagonals. Find the number n diagonals for 25-sided figure
  • A. 7
  • B. 8
  • C. 9
  • D. 10
View Answer & Discuss JAMB 1987
23
Solve the inequality x - 1 > 4(x + 2)
  • A. x > -3
  • B. x < -3
  • C. 2 < x < 3
  • D. -3 < x < -2
View Answer & Discuss JAMB 1987
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24

Simplify \(\frac{x^2 - y^2}{2x^2 + xy - y^2}\)

  • A. \(\frac{x + y}{2x + y}\)
  • B. \(\frac{x + y}{2x - y}\)
  • C. \(\frac{x - y}{2x - y}\)
  • D. \(\frac{x - y}{2x + y}\)
View Answer & Discuss (2) JAMB 1987
25

The minimum value of y in the equation y = x\(^2\) - 6x + 8 is

  • A. 8
  • B. 3
  • C. 7
  • D. -1
View Answer & Discuss (5) JAMB 1987
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