$469\:\:-68\infty$

$2tseny+y^3e^t+\left(t^2cosy+3y^2e^t\right)\frac{dy}{dt}=\left(0\right)$

$\left(\sqrt{x}+\sqrt{y}\right)\left(x-\sqrt{xy}+y\right)$

$\lim_{x\to-2}\:\:x^2-4\:\:x+2$

$\left(a^3\:_{-4a^2}+6a\right)\left(-ab\right)$

$\int\frac{2x+3}{\sqrt{1+2x}}dx$

$x^2-8x=-9$