ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 111:

• JAMB 1979

Simplify \(\frac{x^2 + y^2 + xy}{x + y}\) - \(\frac{x^2 + y^2}{x - y}\)

A. \(\frac{x^2 + y^2} {(x - y)^2}\)
B. \(\frac{2y^3} {y^2 - x^2}\)
C. \(\frac{3x^2 + y^2} {(2x - y)^2}\)
D. \(\frac{x^2 + y^2} {(x^2 - y)}\)

Question 112:

• JAMB 1979

Make x the subject of the equation a(b + c) + \(\frac{5}{d}\) - 2 = 0

A. C = \(\frac{2d - 5 - b}{ad}\)
B. C = \(\frac{2d - 5 - abd}{ad}\)
C. C = \(\frac{2d - 5 - ab}{ad}\)
D. C = \(\frac{5 - 2d - b}{ad}\)

Question 113:

• JAMB 1979

Which of the following values of the variable x, (a)x = 0, (b)x = -3, (c)x = 9, satisfy the inequalities 0 < \(\frac{x + 3}{x - 1}\) < 2?

A. (a), (b), (c)
B. (c)
C. None of the choices
D. All of the above

Question 114:

• JAMB 1979

Solve the simultaneous linear equations: 2x + 5y = 11, 7x + 4y = 2

A. X = -8, y = 1
B. X = -2, y = 4
C. X = \(\frac{-34}{27}\), y = \(\frac{73}{27}\)
D. X = 7, y = -9

Question 115:

• 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