Polynomials - Jamb Mathematics Past Questions and Answers

Question 66:

• 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 67:

• 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 68:

• 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

Question 69:

• JAMB 1980

If a function is defined by f(x + 1) = 3x2 - x + 4, Find f(0).

A. 4
B. 6
C. 9
D. 8
E. 2

Question 70:

• JAMB 1981

Find a two-digit number such that three times the tens digit is 2 less than twice the units digit and twice the number is 20 greater than the number obtained by reversing the digits

A. 24
B. 42
C. 74
D. 47
E. 72