Question

expresss with rational denominator : 4/ √5-1​

Answer 1

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Answer 2

Answer:

4/ (√5-1)

= 4 (√5+1) / (√5+1) (√5-1)

= 4 (√5+1) / ( 5-1)

= 4 (√5+1) / 4

= (√5+1)