Question

If x+1/x=15 then find the value x+1/x^2

Answer 1

(x+1/x)^2=x^2+1/x^2+2x×1/x
15^2=x^2+1/x^2+2
225-2=x^2+1/x^2
x^2+1/x^2=223

Answer 2

x+1/x^2=223

hope it helps you