Question

if x+1/X=4 find x^2+1/x^2

Answer 1

this is the answer of your question

Answer 2

x+1/x=4

x+1=4x

3x=1

x=1/3

x²+1/x²=(1/3)²+1/(1/3)²

=1/9+1/(1/9)

1/9+9/1=82/9