Question

rationalise thedinominater 5/√7-√5नेशनल हाईवे डिनॉमिनेटर बाय रूट 7 - रूट ऑफ़ 5 ​

Answer 1

to rationalise the denominator i.e, (√7-√5) , we need to divide and multiply it with (√7+√5)

so ,

{5(√7+√5)}/{√7-√5)(√7+√5)

=5(√7+√5)/7-5

=(5/2)(√7+√5)

this is the result after rationalisation

Hope its helpful !

Answer 2

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