Rationalize frac 2 - sqrt5 3 - sqrt5 - JAMB Mathematics 2024 Question
Rationalize (\frac{2 - \sqrt5}{3 - \sqrt5})
A
B
C
D
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Correct Option: B
(\frac{2 - \sqrt5}{3 - \sqrt5}) x (\frac{3 + \sqrt5}{3 + \sqrt5})
(\frac{(2 - \sqrt5)(3 + \sqrt5)}{(3 - \sqrt5)(3 + \sqrt5)}) = (\frac{6 +2\sqrt5 - 3\sqrt5 - \sqrt25}{9 + 3\sqrt5 - 3\sqrt5 - \sqrt25})
= (\frac{6 - \sqrt5 - 5}{9 - 5})
= (\frac{1 - \sqrt5}{4})
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