What is the length of SQ
I believe you use power of a point for this problem.
https://artofproblemsolving.com/wiki/index.php/Power_of_a_Point_Theorem
Here's a nice article to read if you don't know it.
6^2 = x*(x+5)
36 = x^2 + 5x
x = 4
I hope that's correct :))
=^._.^=
ah nvm, read that wrong