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Rationalize \(\frac{\sqrt{2} + \sqrt{3}}{\sqrt{2} - \sqrt{3}}\)

Mathematics
JAMB 2019

Rationalize \(\frac{\sqrt{2} + \sqrt{3}}{\sqrt{2} - \sqrt{3}}\)

  • A. \(-5 - 2\sqrt{6}\)
  • B. \(-5 + 3\sqrt{2}\)
  • C. \(5 - 2\sqrt{3}\)
  • D. \(5 + 2\sqrt{6}\)
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Correct Answer: Option A
Explanation

\(\frac{\sqrt{2} + \sqrt{3}}{\sqrt{2} - \sqrt{3}}\)

= \((\frac{\sqrt{2} + \sqrt{3}}{\sqrt{2} - \sqrt{3}})(\frac{\sqrt{2} + \sqrt{3}}{\sqrt{2} + \sqrt{3}})\)

= \(\frac{2 + \sqrt{6} + \sqrt{6} + 3}{2 - \sqrt{6} + \sqrt{6} - 3}\)

= \(\frac{5 + 2\sqrt{6}}{-1}\)

= \(- 5 - 2\sqrt{6}\)

There is an explanation video available below.


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Explanation Video

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