Question

If x^2+1/x^2=27 then find the value of x+1/x

Answer 1

x^2 + 1/x^2 = 27

x^2 + 1/x^2 + 2 = 27 + 2

x^2 + 1/x^2 + 2 * x * 1/x = 29

(x + 1/x)^2 = 29

x + 1/x = √29 , -√29 Ans...