WAEC Mathematics 2012 Question 2

Question 2

Surds

Simplify: (3√5 × 4√6)/(2√2 × 3√3)

  1. A.√2
  2. B.√5
  3. C.2√2
  4. D.2√5
Show the answer and explanation

Answer: D (2√5)

Explanation

Numerator = 12√30 and denominator = 6√6. 12√30/(6√6) = 2√5.