$\int\frac{1}{\left(x^2\sqrt{\left(a^2+x^2\right)}\right)}dx$

$\frac{csc\left(-31.5\right)}{\sqrt{csc\left(-31.5\right)^2-1}}$

$4w^2+12w-9$

$\left(\frac{2x^{\frac{2}{3}}}{y^{\frac{1}{2}}}\right)^2\left(\frac{3x^{\frac{-3}{6}}}{y^{\frac{1}{3}}}\right)^{\frac{1}{3}}$

$\left(+6\right)\:x\:\left(-5\right)$

$4p-3q^2-3p-3q-2pq+p^2$

$w^2\:+21\:x\:9$