$1-\int9\sqrt{16-25x^{2}}dx$

$-1^2-2$

$\frac{x^4-x^3+7x^2-15}{x^2+2}$

$\int ( x - 2 ) ^ { 2 } d x$

$\left(w^2+2\right)\left(w^2-3\right)$

$=\frac{\cos x}{\tan x\cdot\left(1-\sin x\right)}$

$\frac{dy}{dx}\left(y=\left(\sqrt[3]{\frac{e^x\left(x-1\right)}{x}}\right)\right)$