Waec Mathematics 1991 Past Questions and Answers

Question 6:

• WAEC 1991

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

A. 1/8
B. 1/4
C. 2
D. 4
E. 8

Question 7:

• WAEC 1991

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

Question 8:

• WAEC 1991

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)

Question 9:

• WAEC 1991

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

Question 10:

• WAEC 1991

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. \(\frac{4}{2y - 5x}\)