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Given x = 9 + 4√5, find √x - 1 / √x √x = √(9 + 4√5) √x = √(√5 + √4 + 2√(5x4)) √x = √(√5 + √4)2 √x = √5 + 2 1 / √x = 1 / (√5 + 2) rationalize we get 1 / √x = (√5 - 2) ∴ √x - 1 / √x = √5 + 2 - √5 + 2 = 4.
Hence it is proved that itbis Rational Number...
Mark me as brainlist answer.....
Hence it is proved that itbis Rational Number...
Mark me as brainlist answer.....
SanyaBhasin:
till then one more answer will come, how will i able to do that
and the answer you have answered, i am not able to understand properly, so can u use pen and paper instead
and edit up your answer
i will see
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