Polynomials - Jamb Mathematics Past Questions and Answers

Question 136:

• JAMB 1990

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

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

Question 137:

• JAMB 1990

Given that x² + y² + z² = 194, calculate z if x = 7 and \(\sqrt{y}\) = 3

A. \(\sqrt{10}\)
B. 8
C. 12.2
D. 13.4

Question 138:

• JAMB 1990

What is the equation of the quadratic function represented by the graph?

A. Y = x² + x - 2
B. Y = -x² - x + 2
C. Y = x² - x - 2
D. Y = -x² - x + 2

Question 139:

• JAMB 1991

Multiply (x² - 3x + 1) by (x - a)

A. X³ - (3 + a) x² + (1 + 3a)x - a
B. X³ - (3 - a)x² + 3ax - a
C. X³ - (3 - a)x² - (1 = 3a) - a
D. X³ + (3 - a)x² + (1 + 3a) - a

Question 140:

• JAMB 1991

Evaluate \(\frac{xy^2 - x^2y}{x^2 - xy^1}\) When x = -2 and y = 3

A. 3
B. -\(\frac{3}{5}\)
C. \(\frac{3}{5}\)
D. -3