WAEC Further Mathematics 2011 Question 7

Question 7

Indices and Logarithms

Simplify: ∛(8/27) − (4/9)−1/2

  1. A.−5/6
  2. B.−4/27
  3. C.0
  4. D.2/9
Show the answer and explanation

Answer: A (−5/6)

Explanation

∛(8/27) = 2/3 and (4/9)−1/2 = (9/4)1/2 = 3/2. So 2/3 − 3/2 = −5/6.