Hello,

please advise..give suggestions.thanks.

Is it bad to expand out (x+2y)² first ?then integrate it ?can doing it this lead to getting the wrong answer??

Here

∫∫∫(x+2y)²dxdydz

the first inner integral ranges from 0 to 1

the next one goes from -2 to 0

the last one goes from 0 to 3

what is the best way of integrating this ??