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OAU Post-UTME Mathematics 2014 Question 11

Question 11

Surds

Simplify: 30/√2 + √50

  1. A.4√5
  2. B.20√2
  3. C.5√5
  4. D.10√2
Show the answer and explanation

Answer: B (20√2)

Explanation

30/√2 = 15√2 and √50 = 5√2. Together 20√2.