$21x^2+19x-2$
$\sqrt{\frac{100a^{10}}{9b^{6}}}$
$\frac{3x-4}{3-x}=2$
$\int-8xe^{4x}dx$
$a^1-6a^2+1-4a^2$
$\int\:xlnx^2dx$
$2\:=\:e^{-3}+c$
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