Answers

2014-06-23T18:23:14+08:00
(2s-1)^2=225
2s-1=+or-√225
2s-1=+or-15
2s=1+or-15
first solution is
2s=1+15
2s=16
s=8
second solution is
2s=1-15
2s=14
s=7
2 3 2
Thank you so much delgadok56
Delgado,,,,the answer is s=7?