# Math Help - evaluate the indefinite integral

1. ## evaluate the indefinite integral

Hi, I'm having trouble trying to solve this last problem on my homework. I dont understand what I have to do with the dx that's on top.

Can anyone help me out?

Thank you.

2. $\int \frac{dx}{(4+x^2)^2}= \int \frac{1}{(4+x^2)^2}~dx$

does this make it easier?

3. Originally Posted by pickslides
$\int \frac{dx}{(4+x^2)^2}= \int \frac{1}{(4+x^2)^2}~dx$

does this make it easier?
That's all I needed to do? lol. If so, I believe I can take it from here.

I solved it and got the right answer. Thank you for the speedy response.