Question

If x square +1/x square=27 then find the value of x+1/x.

Answer 1

Step-by-step explanation:

x²+1/x² = 27

(x)²+(1/x)²+2(x)(1/x) = 29

using formula ,

a²+b²+2ab = (a+b)²

(x+1/x)² = 29

x+1/x = √29