$\frac{d^9}{dx^9}\left(e^{-x^2}\right)$

$\left(-\frac{3}{5}bc^4\right)\left(\frac{10}{3}a^3b^2c^3\right)$

$f^3\left(\frac{dx}{df}\right)=x^3-x^3f^2$

$0.2x-0.1>0.3$

$\int\frac{1}{x^2\sqrt{9-25x^2}}dx$

$\int x\left(x^2+3\right)^6\sin\left(\left(x^2+3\right)^7\right)dx$

$3x^2+9x+6y^2+x+2y$