$\lim_{x\to-\infty}e^{\frac{5}{x-1}}$
$\sin^2\left(-x\right)+\cos^2\left(x\right)=1$
$\frac{1}{2}+\frac{3y}{x}=\frac{dy}{dx}$
$\int\frac{1}{\left(x-3\right)\left(x+1\right)}dx$
$14y^2+57y-378=0$
$27-2,3-3,45-5,321-2,345-19+2,36+3,01$
$s^2-3s+4$
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