$\int_0^{0.6}\left(\frac{x^2}{\sqrt{9-x^2}}\right)dx$

$\frac{a^{3}+7^{3}}{5+1}$

$-x^2-2x-1$

$\int\frac{2+3\sqrt[3]{x^{2}}+5\sqrt{x}}{\sqrt{x^{3}}}dx$

$\frac{\tan^2\left(37.5\right)\cdot tan^2\left(7.5\right)-1}{tan^2\left(37.5\right)-tan^2\left(7.5\right)}$

$4\left(x+2\right)-3\left(x-5\right)\le2$

$2x+\frac{1}{3}\ge2$