Polynomials - Jamb Mathematics Past Questions and Answers

Question 56:

• JAMB 1979

If x³ - 12x - 16 = 0 has x = -2 as a solution then the equaion has

A. X = -4 as a solution also
B. 3 roots all different
C. 3 roots with two equal and the third different
D. 3 roots all equal
E. Only one root

Question 57:

• JAMB 1979

12 men complete a job in 9 days. How many men working t the same rate would be required to complete the job in 6 days?

A. 24
B. 18
C. 12
D. 9
E. 8

Question 58:

• JAMB 1979

Simplify \(\frac{1 - x^2}{x - x^2}\), where x \(\neq\) 0

A. \(\frac{1}{x}\)
B. \(\frac{1 - x}{x}\)
C. \(\frac{1 + x}{x}\)
D. \(\frac{1}{x - 1}\)
E. \(\frac{-x - 1}{1}\)

Question 59:

• JAMB 1979

If y = x² - 2x - 3, Find the least value of y and corresponding value of x

A. X = 3, y = 3
B. X = 1, y = -3
C. X = 4, y = 1
D. X = 1, y = -4
E. X = 2, y = -3

Question 60:

• JAMB 1979

A father is now three times as old as his son. Twelve years ago he was six times as old as his son. How old are the son and the father?

A. 20 and 45
B. 100 and 150
C. 45 and 65
D. 35 and 75
E. 20 and 60