Rationalise the denominator √5-2/√5+2
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Answer:
(√5 - 2/ √ 5 + 2) × (√5 - 2 / √5 - 2)
(√5 - 2)^2 / 5 - 4
5 + 4 - 2*2*√5 / 1
9 - 4 √5
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