Question

If (x+1/x) =5, then (x² +1/x²)=?​

Answer 1

Answer:

23

Step-by-step explanation:

so first (x+1/x)=5

now square both sides ... we get

x^2+2.(x).(1/x)+1/x^2 = 25

x^2+1/x^2 = 25-2                      { (2.x.1/x = 2) taking 2 to RHS sign changes to - }

hence x^2+1/x^2 = 23

there u go :)