If m - 1/m = 7, then what is the value of m^2 + (1/(m^2))?

If $ m - \frac{1}{m} = 7$

Then what is the value of $m^2 + (\frac{1}{m^2})$

If $K-\frac{1}{K}=n$

then, $K^2+\frac{1}{K^2}$ = n² + 2

$m^2 + (\frac{1}{m^2})$ = 7² + 2 = 51