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If x + frac 4 x - 4 = 0 &nbsp...

This question belongs to Arithmetic Ability Algebra
Algebra
?

If $$x + \frac{4}{x} - 4 = 0,$$   then the value of x2 - 4 is equal to:

Answer & Solution
Correct Answer: Option C
$$\eqalign{ & x + \frac{4}{x} = 4 \cr & x = 2 \cr & {\text{So, }}{x^2} - 4 = ? \cr & {x^2} - 4 = 4 - 4 = 0 \cr} $$
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