$\left(x+4cm\right)\left(7cm+x\right)$
$\sqrt[3]{+27}$
$\int\frac{1+t^2}{t}dt$
$4x^2+9y^2=25$
$9y'-9x+xy=0$
$\left(6x-2y\right)\left(2x-6y\right)$
$9+4y+y$
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