If $x+\frac{1}{x}=2$, then the value of $x^ 4 + x^4$ =___________.

0 2 -1 1

2

If $(x + \frac{1}{x}) = 2$ Put the value of x = 1 $x^ 4 + x^4$ = $1^ 4 + 1^4$ $x^ 4 + x^4$ = 2