Question

If (x-1/x)=9 then (x²+1/x²)​

Answer 1

Step-by-step explanation:

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

(9)^2+(x-1/x)^2= 2×53

(x-1/x)^2 =106 -81 =25

(x-1/x) = +/-(5) , उत्तर।