$x^3+x^2-16=6x+x^3$

$\lim\:_{x\to\:\infty\:}\left(\frac{\sqrt{x}+x^2}{5x-x^2}\right)$

$\int\left(\frac{1}{\left(4x^2+4x-3\right)^{\frac{3}{2}}}\right)dx$

$2x+1<x+3$

$57\cdot63$

$\left(x+13\right)\left(y-13\right)$

$\sin\left(x\right)csc9\left(x\right)=cos\left(x\right)sec\left(x\right)$