Question

if x + 1/x =5 then x²+1/x² =​

Answer 1

Answer:

Given x + 1/x = 5

By squaring on both sides

(x + 1/x)² = 5²

x² + 1/x² + 2 (x)(1/x) = 25

x² + 1/x² = 25 - 2

x² + 1/x² = 23