# Math Help - Integrating complicated square roots without a calculator

1. ## Integrating complicated square roots without a calculator

Well, it is complicated for me at least. Im am in calculus three at my university and struggle with the basics of integrals because they seemed to have slipped my mind, even U SUB.

But how do i integrate Sqrt(4t^2 + 16t^4)?

Thank you for any help!

2. $\int \sqrt{4t^2 + 16t^4} = \int 2t\sqrt{1+4t^2}$ (assuming t>0). Now let $u=4t^2$.