Question

x^2+1/x^2 =2 then what is the value of x+1/x. plz btadooooooo​

Answer 1

x² + 1/x² = 2

We'll use the formula (a+b)² = a²+b²+2ab

(x + 1/x)² = x² + 1/x² + 2×x×1/x

(x + 1/x)² = 2 + 2

(x +1/x)² = 4

x + 1/x = ±2