Jamb Mathematics 1988 Past Questions and Answers

Question 6:

• JAMB 1988

if a = -3, b = 2, c = 4, evaluate \(\frac{a^3 - b^3 - c^{\frac{1}{2}}}{b - a - c}\)

A. 37
B. \(\frac{-37}{5}\)
C. \(\frac{37}{5}\)
D. -37

Question 7:

• JAMB 1988

If (g(y)) = \(\frac{y - 3}{11}\) + \(\frac{11}{y^2 - 9}\). what is g(y + 3)?

A. \(\frac{y}{11} + \frac{11}{y(y + 6)}\)
B. \(\frac{y}{11} + \frac{11}{y(y + 3)}\)
C. \(\frac{y + 30}{11} + \frac{11}{y(y + 3)}\)
D. \(\frac{y + 3}{11} + \frac{11}{y(y - 6)}\)

Question 8:

• JAMB 1988

Factorize completely \((x^2 + x)^2 - (2x + 2)^2\)

A. (x + 1)(x + 2)(x - 2)
B. (x + 1) 2(x + 2) (x - 2)
C. (x + 1)² (x + 2)²
D. (x + 1)² (x + 2)(x - 2)

Question 9:

• JAMB 1988

Simplify \(\frac{x - y}{x^{\frac{1}{3}} - x^{\frac{1}{3}}}\)

A. X² + xy + y²
B. X^{\(\frac{2}{3}\)} + x ^{\(\frac{1}{3}\)} + y^{\(\frac{2}{3}\)}
C. X^{\(\frac{2}{3}\)} - x^{\(\frac{1}{3}\)}y^{\(\frac{2}{3}\)}
D. Y^{\(\frac{2}{3}\)}

Question 10:

• JAMB 1988

What is the solution of the equation x2 - x - 1 + 0?

A. X = 1.6 and x = -0.6
B. X = -1.6 and x = 0.6
C. X = 1.6 and x = 0.6
D. X = -1.6 and x = -0.6