Question

hi, if x-1/x=√18
what x+1/x
will be?

Answer 1

Answer:

$\frac{x + 1}{x} = \sqrt{18} \\ \frac{x + 1}{x} = ..... \\ x + 1 = \sqrt{18} x \\ x = \sqrt{18} x - 1...........(1) \\ \frac{x + 1}{x} \\ \frac{ \sqrt{18x} - 1 + 1}{ \sqrt{18x} - 1} \: \: \: \: \: \: \: \: (from(1)) \\ \frac{ \sqrt{18x} }{ \sqrt{18x} - 1} \times \frac{ \sqrt{18x} + 1}{ \sqrt{18x} + 1 } \\ \frac{18x + \sqrt{18x} }{18x - 1}$