$\int\frac{\left(x^5+x-1\right)}{x\left(x^3+1\right)}dx$

$\frac{csc\left(x\right)-1}{sec^2\left(x\right)cos\left(x\right)}$

$x\left(x+2\right)+3\left(x+2\right)$

$\:3y\left(2y\:+\:6\right)\:-\:\left(-12y\:+\:7\right)$

$\left(x^3+2\right)\left(x^3+4\right)$

$3\cdot\left(2x+1\right)\le-4x$

$2\left(5+2-3\right)$