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UI Post-UTME Mathematics 2021 (Model questions) Question 5

Question 5

Surds

Simplify 4√27 + 5√12 − 3√75

  1. A.7
  2. B.−7
  3. C.−7√3
  4. D.7√3
Show the answer and explanation

Answer: D (7√3)

Explanation

12√3 + 10√3 − 15√3 = 7√3.