ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 126:

• JAMB 1980

Three numbers, x, y and z are connected by the relationships y = \(\frac{4x}{9}\) + 1. If x = 99, find z

A. 6\(\frac{1}{3}\)
B. 20
C. 21
D. 176\(\frac{4}{9}\)
E. None of the above

Question 127:

• JAMB 1980

What will be the value of k so that the quadratic equation kx² - 4x + 1 = 0 has two equal roots?

A. 2
B. 3
C. 4
D. 8
E. \(\frac{1}{4}\)

Question 128:

• JAMB 1980

Find the solution of the equation x + 2\(\sqrt{x - 8}\) = 0

A. (4, 16)
B. (2, 4)
C. (4, 1)
D. (1, 16)
E. (16, 16)

Question 129:

• JAMB 1980

Solve the system of equation 2^{x + y} = 32, 3^{3y - x} = 27

A. (3, 2)
B. (-3, 2)
C. (3, -2)
D. (-3, -2)
E. (2, 2)

Question 130:

• JAMB 1980

The expression x3 - 4x2 + cx + d is such that x + 1 is its factor, and its value is 1 when x is -2. Find c and d.

A. C = 4 and d = -9
B. C = -4 and d = 9
C. C = -20 and d = -15
D. C = 20 and d = -15
E. C = -20 and d = 15