Question

hey friend .. solve this

Answer 1

here is ur ans ,hope it helps u!!

Answer 2

Hey! Here is your answer:

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$\frac{4 + \sqrt{5} }{4 - \sqrt5}$

By rationalising, you get

$\frac{21 +8\sqrt5}{11} = a + b \sqrt{5}$

$21 + 8\sqrt5 = 11a + 11b\sqrt5$

$11a = 21 | 11b\sqrt5 = 8\sqrt5$

So, $a = \frac {21} {11} , b = \frac 8 {11}$

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