$100a^2b^3c-150b^2+50ab^3c^3-200bc^2$
$\lim_{y\to0}\left(\frac{\left(x+y\right)^2}{x^2+y^2}\right)$
$\frac{dy}{dx}=3$
$\left(7x\:-\:a\right)^2$
$x^2+x+3+x^2-3x$
$5.0+5.0+5.0+5.0+4.5$
$10abc^2+3abc^2-2ab$
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