$a.\left(x+2\right)\left(x+y+3\right)$

$\frac{\csc\left(x\right)^2-\sin\left(x\right)^2}{\csc\left(x\right)+\sin\left(x\right)}$

$\lim_{x\to\infty}\left(1+\frac{3}{5x}\right)^x$

$x^2y+y-x=1$

$\frac{566.35}{279268.25}$

$\left(0\right)^2-6\left(0\right)+8$

$\left(128\right)\left(-3\right)$