Question

if x - 1/x = 3 , then find the value x to the power 2 + 1/x to the power 2

Answer 1

Answer:

7

Step-by-step explanation:

Solution :

We know (x+1x)2=x2+1x2+2 , by substituting the value of x+1x=3 , we have

(3)2=x2+1x2+2.

⇒x2+1x2=7