$\frac{dy}{dx}=\frac{6xy}{\left(ln\left(y\right)\right)^8}$

$\lim_{x\to\infty}\frac{x^2+5x}{25-x^2}$

$\left(x+z\right)^4$

$\int_0^1\left(e^{x+iy}\right)dx$

$\lim_{x\to-2}\left(-\frac{3}{x+2}\right)$

$\frac{6a^4+5a^3-1}{2a^2+a-1}$

$\left(2ab^2-6cd^3\right)\left(2ab^2+3cd^3\right)$