Which of the following statement is correct? I. If K +1/K, then K^2 +…

Which of the following statement is correct?

I. If $K +\frac{1}{K}$, then $K^2 +\frac{1}{K^2} = 142 $

II. The value of $(K^2 +\frac{1}{K^2})(K-\frac{1}{K})(K^4+\frac{1}{K^4})(K+\frac{1}{K})$ is 

$K^{16}-\frac{1}{K^{16}}$