passwella.
Menu

JAMB Mathematics 2003 Question 20

Question 20

Algebraic Expressions

Factorize completely 4abx − 2axy − 12b2x + 6bxy.

  1. A.2x(a − 3b)(2b − y)
  2. B.2x(3b − a)(2b − y)
  3. C.2x(a − 3b)(y − 2b)
  4. D.2x(2b − a)(3b − y)
Show the answer and explanation

Answer: A (2x(a − 3b)(2b − y))

Explanation

Group: 2ax(2b − y) − 6bx(2b − y) = (2ax − 6bx)(2b − y) = 2x(a − 3b)(2b − y).