$x^2-13x-30$
$2ab^2-5a^2b-3ab^2+4ab+a^2b$
$\frac{2}{3}x\frac{3}{3}$
$6x^2-10x-4>0$
$6y''+y'-y=0$
$\frac{dy}{dx}=4xy^2$
$2\left(5x-3\right)+3\left(10x^2-x\right)-3\left(4x+1\right)$
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