Question

X^2+1/x^2 = 11 find the value of x+1/x =​

Answer 1

Answer:

Given that ;

x² + 1 / x² = 11

On adding 2 both sides ;

⇒ x² + 1 / x² + 2 = 11 + 2

⇒ ( x + 1 / x )² = 13

⇒ x + 1 / x = ±√13

Hence, the answer is ± √13