$\lim_{x\to\infty}\left(\frac{\left(x-x\sqrt{x}\right)}{\left(2\sqrt[3]{x^2}\right)+2x-5}\right)$

$\left(\frac{2}{3}x^2-\frac{1}{4}y^2+\frac{3}{5}xy\right)\left(2y-\frac{3}{2}x\right)$

$\frac{dy}{dx}=\frac{1}{\sqrt[3]{x+2}}$

$2ab\cdot3c$

$-75-49-1$

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

$9a^4-18ab$