$\left(\frac{3}{8}a^3b+\frac{3}{5}x^2\right)\cdot\left(\frac{5}{3}x^2y^2+\frac{8}{3}a^3b^2\right)$

$\frac{1}{7}\sqrt{49x^3x^7}$

$\int_{\frac{-\pi}{4}}^{\frac{3\pi}{4}}4\sec\:\left(x\right)\tan\:\left(x\right)dx$

$\sqrt{\left(\frac{x+2}{2-x}\right)}$

$\int2x\cos5xdx$

$x-3^2+2x+5^2-4-3x^2$

$\frac{dy}{dx}\left(x^2y^2=-4\right)$