Jamb Mathematics 1992 Past Questions and Answers

Question 11:

• JAMB 1992

Factorize \(9p^2 - q^2 + 6qr - 9r^2\)

A. (3p - 3q + r)(3p - q - 3r)
B. (6p - 3q - 3r)(3p - q - 4r)
C. (3p - q + 3r)(3p + q - 3r)
D. (3q - p + 3r)(3q - p + 3r)

Question 12:

• JAMB 1992

Solve the equation: \(y - 11\sqrt{y} + 24 = 0\)

A. 8, 3
B. 64, 9
C. 6, 4
D. 9, -8

Question 13:

• JAMB 1992

Make t the subject of formula S = ut + \(\frac{1}{2} at^2\)

A. \(\frac{1}{a}\) (-u + \(\sqrt{U^2 - 2as}\))
B. \(\frac{1}{a}\) {u \(\pm\) (U² - 2as)}
C. \(\frac{1}{a}\) {u \(\pm\) \(\sqrt{2as}\)}
D. \(\frac{1}{a}\) {-u + \(\sqrt{( 2as)}\)}

Question 14:

• JAMB 1992

A man invested a sum of N280.00 partly at 5% and partly at 4%. if the total interest is N12.80 per annum, find the amount invested at 5%

A. 14.00
B. 120.00
C. 140.00
D. 160.00

Question 15:

• JAMB 1992

If x + 1 is a factor of x³ + 3x² + kx + 4, find the value of k

A. 6
B. -6
C. 8
D. -8