Question

Find the value of x^2 + 1 divided by x^2 if x-1 divided by x =5

Answer 1

x^2+1/x^2

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

(5)^2 = x^2+1/x^2 + 2

25 = x^2+1/x^2 + 2

25-2 = x^2+1/x^2

23 = x^2+1/x^2

Explanation: