$2x^2+9x-35$
$3m^2+8m+5$
$\left(6-2b\right)^2$
$\int x^ne^{mn}\:dx$
$4x^2-7xy-3y^2+3x^2-4xy-7y^2-7x^2+3x^2+4y^2$
$\tan^2a\left(\frac{\cot\left(a\right)}{\sin\left(a\right)}\right)$
$8m^2+4m+12m^2n^2$
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