$\left(-xy+y^2\right)dx+x^2dy=0$

$\lim_{x\to\infty}\left(e^{e^x}\right)$

$\lim_{x\to\infty}\left(x\sin\left(\frac{9\pi}{x}\right)\right)$

$4c^2d^8\left(cd\right)^5$

$\left(4x^2-26x+25\right)\left(x-5\right)$

$\int\left(\left(2x+4\right)\left(x^2+4x+4\right)\right)dx$

$\int x^3\sqrt{2x+7}dx$