$\frac{2m\left(2m+3\right)+m\left(2m+5\right)}{6m^2+5m-11}$
$2\:cos^2x\:=\:3\:sin\:x$
$\frac{d}{dx}x^{\sqrt{13x}}$
$6x-30$
$\int\left(\frac{2r}{ln2}\right)dx$
$3w-5+1-6w$
$\frac{x^2-4}{11-2x}$
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