SOLUTION: Express irrational solutions in simplest radical form (n-5)^2 = 20 I get {4, 4} is this right?

No that's wrong.



Take square roots of both sides, remembering that there
are two square roots of any positive number, a positive
suare root and a negative square root:

 and 

   and  

    and  

    and 

Solution set = (,)

Edwin