$\left(3\right)\left(-1\right)+\left(1\right)\left(0\right)+\left(1\right)\left(3\right)$

$\left(2a-6d\right)^2$

$12ab^2-6^ab^2-24a^6b^2-20ab\:$

$\frac{dy}{dx}=\sqrt{1-y^2}\frac{d^2y}{dx^2}$

$4\left(x+2\right)-3\left(x-5\right)<8x$

$\int\frac{e^x}{\left(1+x\right)^2}dx$

$\int\frac{30\:\:}{e^{-x}}dx$