$\lim_{x\to\infty}\left(1-\frac{2}{3x}\right)^{3x}$
$x^2-12x=14$
$\int\frac{6x-7x^2}{\left(x+1\right)^2}dx$
$1+2\sin x\cos x=1$
$\frac{1}{2}xy+\frac{1}{6}xy$
$-2094\:-\:67$
$q-26=53$
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