Question

if x=3+2√2, find the value of √x- 1/√x

Answer 1

if you simplify the give equation you get or rationalise it

(x - 1)÷ -/x [ this symbol -/ indicates that it is root]

after this substitute the given value in it
which gives

(2 + 2-/2)(-/3 + 2-/2) ÷ (3 + 2-/2)