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WAEC Mathematics 2002 Question 36

Question 36

Algebraic Expressions

Factorize m(2a − b) − 2n(b − 2a).

  1. A.(2a − b)(2n − m)
  2. B.(2a + b)(m − 2n)
  3. C.(2a − b)(m + 2n)
  4. D.(2a − b)(m − 2n)
Show the answer and explanation

Answer: C ((2a − b)(m + 2n))

Explanation

−2n(b − 2a) = +2n(2a − b), so the expression is (2a − b)(m + 2n).