$2a\sqrt{44a^3b^7c^9}$

$\frac{2\infty^3\infty^2+3}{\infty^2}$

$7x+2\left(21x^2-29x-10\right)$

$dy+5y=\left(10\right)dx$

$\left(8x^2y^3z+3x^2y+6xy\right)\left(3x^2y\right)$

$\frac{d^2}{dx^2}\left(x^2+y^2=a^4\right)$

$10x+4-3x-1$