If x +4/x - 4 = 0, then the value of x^2 - 4 is equal to :

If $x +\frac{4}{x} - 4 = 0, $

then the value of $x^2 - 4$  = ?

Put the value of x = 2 ( This value will satisfy the equation)

= $2^2 - 4$ = 0