Question

Answer now please
It will help a lot
Thank you

Answer 1

Step-by-step explanation:

$x - \frac{1}{x} = 7 \\ \\ \\ {x}^{2} + \frac{1}{ {x}^{2} } = {(x - \frac{1}{x} })^{2} + 2x \times \frac{1}{x} \\ = {7}^{2} + 2 \\ = 49 + 2 \\ = 51$