hmm i didnt do it the way most people did.
I used the fact that if you differentiate (x-2)ln(x-2) then u get ln(x-2) + 1, then did integral from 3 to 7 of ln(x-2) + 1 minus integral from 3 to 7 of 1, using (x-2)ln(x-2) as the primitive of ln(x-2) + 1. I still got 5ln5 - 4, so would...