Question

If x = 7 + 4 under root 3, than value of x +1/x=?

Answer 1

Answer: please see this

Step-by-step explanation:

Mark me as brilliant

Answer 2

$x = 7 + 4\sqrt{3}$

$x + \frac{1}{x} = 7 + 4\sqrt3 + \frac{1}{7+4\sqrt3}$    

$x+\frac{1}{x} = \frac{49+48+56\sqrt3+1}{7+4\sqrt3}$

$x+\frac{1}{x}= \frac{98 + 56\sqrt3}{7+4\sqrt3}$

HOPE IT HELPS !!