$\left(\sec\left(\theta\right)+1\right)\left(\sec\left(\theta\right)-1\right)=\tan^2\left(\theta\right)$

$\int_0^6\left(te^{-1}\right)dt$

$\frac{d}{dx}8x\sqrt{16+0.5x}$

$3m^2n+9n^2+3n$

$\lim_{x\to\infty}3-x^2$

$\int x^5csc^2\left(x^6+2\right)dx$

$x+2\cdot x-3\cdot x+3$