Question

if
$x + \frac{1}{x} = 4$
find the value of
$1. {x}^{2} + \frac{1}{ {x}^{2} }$
$2.{x}^{4} + \frac{1}{ {x}^{4} }$
$3. {x}^{3} + \frac{1}{ {x}^{3} }$
$4.x - \frac{1}{x}$
chapter- Expansion ​

Answer 1

Answer:

Step-by-step explanation: