$\frac{2b^2+b-8}{b-2}$
$\frac{50\left(s+5.01\right)}{\left(s^2+10s+50\right)\left(s+5\right)}$
$\lim_{x\to\infty}\left(1+\frac{1}{3x+1}\right)^{5x+2}$
$\frac{\sin4x}{32}=\frac{1}{8}\left(\sin\left(x\right)\cos\left(x\right)-2\sin^3\left(x\right)\cos\left(x\right)\right)$
$\frac{a^2-b^2}{3a+3b}$
$x^2-18x-19=0$
$x\log x$
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