Question

if x+1/x=3,find the value of x²+1/x²​

Answer 1

Answer:

given that x+1/x=3.

now (x+1/x)^2=x^2+1/x^2+2.

(3)^2=x^2+1/x^2+2.

9-2=x^2+1/x^2.

7 is the answer.