WAEC Mathematics 2008 Question 4

Question 4

Surds

Simplify: √50 + 10/√2

  1. A.10
  2. B.10√2
  3. C.20
  4. D.20√2
Show the answer and explanation

Answer: B (10√2)

Explanation

√50 = 5√2 and 10/√2 = 10√2/2 = 5√2, so the sum is 10√2.