WAEC Mathematics 2012 Question 50

Question 50

Algebraic Expressions

Factorize completely: 32x2y − 48x3y3.

  1. A.16x2y(2 − 3xy2)
  2. B.8xy(4x − 6x2y2)
  3. C.8x2y(4 − 6xy2)
  4. D.16xy(2x − 3x2y2)
Show the answer and explanation

Answer: A (16x2y(2 − 3xy2))

Explanation

The HCF is 16x2y: 32x2y − 48x3y3 = 16x2y(2 − 3xy2).