Question 31870
(sqrt of 2y) +3=11

first subtract both sides by 3 and we get ..

(sqrt of 2y) = 8 

taking square of both sides we get 

2y = 64 

divide both sides by 2 and we get..

y = 32
 
Now if you want to  verify you answer ,,,you can put the values of y in the given equation and if you get LHS = RHS,,,this means that you answer is correct..

hope this will help you 

Please feel free to revert back for any further queries.