a = x - 1/x
a^2 = x^2 - 2 + 1/x^2
x^2 + 1/x^2 = 171
a^2 = 171 - 2
a^2 = 169
\(a = \pm 13\)
That is correct cat Long time u havent been on
Yep, in person school has been quite busy. :((
I wish I could be on more.
The message wasn't directed to you, it was to catmg.
You already said you were in 7th grade like me :)