I have to solve this indefine integral:
$$ \int{\sqrt{1 + (3x^2 + 2x - \frac{29}{2})^2}} dx $$
I tried to make the square:
$$ \int{\sqrt{9x^4 +12x^3-29*3x^2 -58x + \frac{29^2 +4}{4}}} dx $$
but this makes me confused more than first. I don't know how to do substitution for this case or any other method. I have no idea. Can you please help me?
Thank you!