Factorization of polynomials - Jamb Mathematics Past Questions and Answers

Question 11:

• JAMB 2014

Factorize 2y² - 15xy + 18x²

A. (2y - 3x) (y + 6x)
B. (2y - 3x) (y - 6x)
C. (2y + 3x) (y - 6x)
D. (3y + 2x) (y - 6x)

Question 12:

• JAMB 1978

If x2 + 4 = 0, then x ?

A. 4
B. -4
C. 2
D. -2
E. None of the above

Question 13:

• 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 14:

• 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 15:

• 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