Question

if (x+1/x)=4. find x+1/x²​

Answer 1

  x+1/x=4

=>x+1=4×x

=>x+1=4x

=>1=4x-x

=>1=3x

=>1/3=x

  x+1/x²

=>(1/3)+1/(1/3)²

=>(1/3)¹⁻²+1

=>(1/3)⁻¹+1

=>3+1

=>4