Question

if x =3+square root 3 then x2 +1/x2=?​

Answer 1

Answer:

if x=2+√3

then

1/x=2-√3(by rationalization)

then(x+1/x)^2 +x^2+(1/x)^2+2*x*(1/x)

that Is (2+√3+2-√3)^2=x^2+(1/x)^2+2

4^2-2=x^2+(1/x)^2

ans is 14....