Question

X+1/x=9 then find the value of x*x+1/x*x

Answer 1

Answer:

Step-1. In, this question we have to do squaring both sides...

Step-2.Square both sides....

Step-3. (x+1/x)^2=(9)^2...

Step-4. x^2+1/x^2+2*x^2*1/x^2= 81....

Step-5. x^2+1/x^2+2= 81....

Step-6. x^2+1/x^2= 81-2...

Step-7. x^2+1/x^2= 79......