$\left(\sin\left(x\right)+\cos\left(x\right)\right)^2=1$

$\frac{d^2}{dx^2}\left(x+y+xy\right)$

$\int\left(\frac{5}{\sin^2x}\right)dx$

$\frac{10-5sec^2x}{sec^2x}$

$\left(a^2-b^2\right)^2\left(a^2+b^2\right)^2$

$2x+5<3x\:-x+8$

$\frac{senx+cosx}{cosxsenx}-\frac{1}{cosx}$