Question

if x=2+√3,then x-1/x is equal to​

Answer 1

x = 2+√3

x -1/x = (2+√3) - 1/(2+√3)

or, (2 + √3) - (2 - √3)/(4-3)

or, 2 + √3 - 2 + √3 = 2√3.