JAMB Mathematics 2004 Question 7

Question 7

Surds

Simplify 1/(√3 + 2) in the form a + b√3

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

Answer: C (2 − √3)

Explanation

Multiply top and bottom by 2 − √3: (2 − √3)/(4 − 3) = 2 − √3.