$-6x^2+5x-50$
$\frac{5}{6\:}cosx+\frac{7}{8}cosx\:-\frac{5}{4}senx\:+\:\frac{1}{5}senx$
$\left(x^2y^2+x^4\right)dx-5x^3y\:dy\:=0$
$18=13x+5$
$\frac{dy}{dx}\left(yx^2\:+\:y\:=\:1\:+\:x^2\right)$
$21g^2+11g-2$
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