WAEC Mathematics 1996 Question 4

Question 4

Indices

Simplify 56x−4 ÷ 14x−8

  1. A.2x−12
  2. B.3x−3
  3. C.4x−4
  4. D.4x−3
  5. E.4x4
Show the answer and explanation

Answer: E (4x4)

Explanation

56 ÷ 14 = 4, and dividing powers means subtracting indices: x−4 − (−8) = x4. So the answer is 4x4.