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JAMB Mathematics 1995 Question 15

Question 15

Algebraic Expressions

Factorize completely the expression abx2 + 6y − 3ax − 2byx

  1. A.(ax − 2y)(bx − 3)
  2. B.(bx + 3)(2y − ax)
  3. C.(bx + 3)(ax − 2y)
  4. D.(ax − 2y)(ax − b)
Show the answer and explanation

Answer: A ((ax − 2y)(bx − 3))

Explanation

Group: abx² − 2bxy = bx(ax − 2y) and −3ax + 6y = −3(ax − 2y). Together: (ax − 2y)(bx − 3).