Question

if X=4+√3 then find X+1/X and x^2+1/x^2

Answer 1

Answer:

(x+x1)2=x2+x21+2×x×x1

⇒(3)2=x2+x21+2

⇒9=x2+x21+2

⇒x2+x21+2=9

⇒x2+x21=9−2=7

∴x2+x21=7