## darkigloo 2 years ago Did I do this problem right? (calculus-area of a region)

1. darkigloo

the intersection points on the graph are (-2,1) and (2,9)

2. darkigloo

i did: $\int\limits_{-2}^{9} (x^2+2x+1-(2x+5))dx$ and I got 605/3. But now I'm starting to think I should have switched the functions. like:$\int\limits_{-2}^{9} (2x+5)-(x^2+2x+1))dx$

3. myininaya

how did you get those pretty integer intersections? how did that one function magically appear?

4. darkigloo

there's a picture of the two graphs and the intersections

5. darkigloo

oh wait...i made a mistake. hold on.

6. myininaya

I'm suppose to ignore that one function?

7. darkigloo

$f(x)=x^2+2x+1$ $g(x)= 2x+5$