Polynomials - Jamb Mathematics Past Questions and Answers

Question 46:

• JAMB 1978

Simplify \(\frac{a - b}{a + b}\) - \(\frac{a + b}{a - b}\)

A. \(\frac{4ab}{a - b}\)
B. \(\frac{-4ab}{a^2 - b^2}\)
C. \(\frac{-4ab}{a^{-2} - b}\)
D. \(\frac{4ab}{a^{-2} - b^{-2}}\)

Question 47:

• JAMB 1978

The set of value of x and y which satisfies the equations x² - y - 1 = 0 and y - 2x + 2 = 0 is

A. 1, 0
B. 1, 1
C. 2, 2
D. 0, 2
E. 1, 2

Question 48:

• JAMB 1978

The quantity (x + y) is a factor of

A. X² + y²
B. X³ - y³
C. 2x² - 3xy + y² - x + 1
D. 2x³ + 2x²y - xy + 3x - y² + 3y
E. X⁵ - y⁵

Question 49:

• JAMB 1978

If x⁴ - kx³ + 10x² + 1x - 3 is divisible by (x - 1), and if when it is divided by (x + 2) the remainder is 27, find the constants k and 1

A. K = -7, 1 = -15
B. K = -15, 1 = -7
C. K = \(\frac{15}{3}\) , 1 = -7
D. K = \(\frac{7}{3}\) , 1 = -17

Question 50:

• JAMB 1978

Add the same number to the numerator and denominator of \(\frac{3}{18}\). If the resulting fraction is \(\frac{1}{2}\), then the number added is

A. 13
B. 14
C. 15
D. 12
E. 11