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UI Post-UTME Mathematics 2016 Question 6

Question 6

Surds

Evaluate 7√3 − √75

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

Answer: B (2√3)

Explanation

√75 = 5√3, so 7√3 − 5√3 = 2√3.