Waec Mathematics Past Questions and Answers

Question 181:

• 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 182:

• 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 183:

• 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. \(\frac{4}{2y - 5x}\)

Question 184:

• WAEC 1991

Simplify: ¹/₄(2ⁿ - 2ⁿ⁺²)

A. 2ⁿ² - 2ⁿ
B. 2^n-2(1-2ⁿ)
C. 2ⁿ + 2²ⁿ + 2
D. 2²ⁿ

Question 185:

• WAEC 1991

Find the equation whose roots are -2/3 and -1/4

A. 12x² + 11x + 2 = 0
B. 12x² - 11x + 2 = 0
C. X² - 11/12x + 2 = 0
D. 12x² - 11x - 2 = 0
E. X² - 11/12x - 2 = 0