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Mathematics 1991 WAEC Past Questions

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6

For what value of y is the expression \(\frac{y + 2}{y^{2} - 3y - 10}\) undefined?

  • A. y = 0
  • B. y = 2
  • C. y = 3
  • D. y = 5
  • E. y = 10
View Answer & Discuss WAEC 1991
7

Factorize 3a\(^2\) - 11a + 6

  • A. (3a - 2)(a - 3)
  • B. (2a -2)(a - 3)
  • C. (3a - 2)(a + 3)
  • D. (3a + 2)(a - 3)
  • E. (2a-3)(a + 2)
View Answer & Discuss (1) WAEC 1991
8

Solve the equation: 3a + 10 = a\(^2\)

  • A. a = 5 or a = 2
  • B. a = -5 or a = 2
  • C. a = 10 or a = 0
  • D. a = 5 or a = 0
  • E. a = 5 or a = -2
View Answer & Discuss (8) WAEC 1991
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9

Simplify \((\frac{3}{x} -  \frac{15}{2y}) \div \frac{6}{xy}\)

  • A. \(\frac{2y - 5x}{4}\)
  • B. \(\frac{9(2x - 5x)}{x^2y^2}\)
  • C. \(\frac{5x - 2y}{2}\)
  • D. \(\frac{c^2y^2}{18y - 45x}\)
  • E. \(\frac{4}{2y - 5x}\)
View Answer & Discuss (4) WAEC 1991
10

Simplify: \(\frac{1}{4}(2^n  - 2^{n + 2}\))

  • A. \(2^{n - 2} - 2^n\)
  • B. \(2^{n-2}(1-2^n\))
  • C. \(2^n + 2^{2 + n}\)
  • D. \(2^{2n}\)
View Answer & Discuss (1) WAEC 1991
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