Question

Please give answer with full explanation
Ch - Number Systems
Class 9th
Don't even try to post irrevalent answers otherwise your 10 answers will be reported​

Answer 1

Answer:

answer is 8.

hope it helps !!

Answer 2

$\underline{ \underline{ \huge\purple{ \sf{ ᴀɴswᴇʀ: }}}}$

$\mathtt{x + \sqrt{15} = 4 } \\ \mathtt{x = 4 - \sqrt{15} } \\ \\ \sf{now} \\ \mathtt{x + \frac{1}{x} } \\ \mathtt{(4 - \sqrt{15}) } + \frac{1}{(4 - \sqrt{15}) } \\ \mathtt{} \\ \mathtt{ \frac{(4 - \sqrt{15 {}^{2}} ) + 1}{(4 - \sqrt{15} )} } \\ \\ \mathtt{ \frac{16 + 15 - 8 \sqrt{15} + 1 }{(4 - \sqrt{15} )} } \\ \\ \mathtt{ \frac{32 - 8 \sqrt{15} }{(4 - \sqrt{15}) } } \\ \\ \mathtt{ \frac{8(4 - \sqrt{15)} }{(4 - \sqrt{15} )} } \\ \\ \mathtt{ \frac{8 \cancel{(4 - \sqrt{15)}} }{ \cancel{(4 - \sqrt{15} )} } } \\ \\ \mathtt{ = 8}$

$\boxed{ \mathtt{answer = 8}}$