ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 141:

• JAMB 1981

Multiply x² + x + 1 by x² - x + 1

A. X⁴ - x + x²
B. X⁴ - x² + x²
C. X⁴ + x² + 1
D. X⁴ + x²

Question 142:

• JAMB 1981

The sum of the root of a quadratic equation is \(\frac{5}{2}\) and the product of its root is 4. The quadratic equation is

A. X + 8x² - 5 = 0
B. 2x² - 5x + 8 = 0
C. 2x² - 8x + 5 = 0
D. X² + 8x - 5 = 0

Question 143:

• JAMB 1981

In the figure, find x in terms of a, b and c.

A. A + b + c
B. 180^o - (a + b + c)
C. A - b - c
D. A + b
E. A + c

Question 144:

• JAMB 1982

Seven years ago, the age of a father was three times that of his son, but in six years time the age of the son will be half that of his father, representing the present ages of the father and son by x and y, respectively, the two equations relating x and y are

A. 3y - x = 0; 2y - x = 0
B. 3y - x = 14; x - 2y = 6
C. 3y - x =7; x - 2y = 6
D. 3y - x = 14; y - 2x = 6
E. X + 3y = 7; x = 2y = 12

Question 145:

• JAMB 1982

The factors of 6x - 5 - x2 are

A. -(x + 3)(x + 2)
B. (x + 5)(x + 1)
C. (x - 5)(1 - x)
D. (x + 1)(x + 5)