Simple line integral problem I cant seem to get

[gr3g1]

I have to evaluate the line integral :
$\oint_{}^{} (2x + y)dx + xydy$ between (-1,2) and (2,5)

on the curve: $y = x + 3$

So, what I did was:
$\int_{-1}^{2} (3x+3)dx + \int_{2}^{5} (x^{2} + 3x)dx$

However, this is wrong and I am not sure why!
Can someone please guide me?
Thanks a lot!

 

[Dick]

You are parametrizing the curve by the value of x which goes from -1 to 2. In BOTH parts. Since you've expressed the dy part of the integral in terms of x, why are you using the y limits there?

 

[gr3g1]

Ahhh, thanks so much!