Question

if a^2+1/a^2=23,find (a+1/a)

Answer 1

a²+(1/a)²=23
a²+(1/a)²+2=25
using (a+b)²=a²+b²+2ab
(a+1/a)²=25
a+1/a=√25

a+1/a = 5
Hope this helps

Answer 2

but I'm not 100% sure