Question

If (x-1/x)^2=7 then what is the value for x^2+1/x^2

Answer 1

9 is the answer

Given

(x - 1/x)^2 = 7

x^2 + 1/x^2 - 2 = 7

x^2 +1/x^2 = 9

Answer 2

Answer:

51

Step-by-step explanation:

Given : (x - 1/x)² = 7

We know that,

x² + 1/x² = (x - 1/x)² + 2 * x * (1/x)

             = (7)² + 2

             = 49 + 2

             = 51

Hope it helps!