To Reiny
posted by Untamed .
Reiny could you please check my Calculus post below, it says CalculusReiny.

done, check it

Thanks, so that  does not matter, cause Im supposed to add all of them, and the answer I got was 37 which is the exact same answer in my textbook.

Then your question should have been
√2(√512√3) + √3(√82√30)
If they have 37 for the way you typed it, then the book is wrong. Check your typing.
Of course the "" matters. 
Oh Ok, so yeah the book is wrong, I checked again, and yeah that negative sign is an error in the book. That would have totally messed me up.