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Rationalise the denominator. 1/√5+√2​
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2 votes
Rationalise the denominator.
1/√5+√2​

User DonX
by
8.6k points

1 Answer

4 votes

Explanation:


(1)/( √(5) + √(2) ) \\ = (1)/( √(5) + √(2) ) * (√(5) - √(2) )/( √(5) - √(2) ) \\ \\ = \frac{ √(5) - √(2) }{ {( √(5)) }^(2) - {( √(2)) }^(2) } \\ \\ = ( √(5) - √(2) )/(5 - 2 ) \\ \\ = ( √(5) - √(2) )/(3)

User Petko M
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