$x\frac{dy}{dx}+y=xe^{-x}$

$\sqrt[5]{33-1}$

$3.8\:x\:0.3$

$\frac{\left(-20a^2b^{\frac{4}{3}}c^{\frac{1}{2}}d^{\frac{2}{5}}+4a^{-4}c^{\frac{1}{6}}d^{\frac{1}{3}}\right)}{4a^{-3}c^{\frac{1}{5}}d^{-\frac{1}{3}}}$

$-3a-12=3a+12$

$x^2+10x+18$

$\left(\sqrt{\sqrt[3]{\sqrt[5]{3^{15}}}}\right)^2$