Question

If (x + 1/ x) = 4, Find the value of (x2 + 1/x2) and (x4 + 1/x4)

Answer 1

Answer:

$x + \frac{1}{x} = 4 \\ (x + \frac{1}{x} )^{2} = {4}^{2} \\ {x}^{2} + \frac{1}{x}^{2}$