Question

rationalize the denominator of 1/√5+√6-√11

Answer 1

Rationalise the denominator...       1           

                                              √6+√5-√11

Consider, 
Rationalize the denominator with its conjugate 

Since the denominator is still an irrational number, rationalize once again with "√30"

Hence the denominator is a rational number...

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Answer 2

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