$$125n^2+200n+80$$

$$\left(u^2+1\right)\frac{dv}{du}\left(+4uv\right)=3u$$

$$\int_1^2\left(tan\:x\right)dx$$

$$-\left(3c-8\right)-3c$$

$$\frac{\sin\left(t\right)+\tan\left(t\right)}{\tan\left(t\right)}$$

$$\frac{1}{\left(x+3\right)^{3}}$$