$36m^4+84m^2n^3+49n^6$
$\frac{10}{7}\:x\:\frac{2}{3}$
$\lim_{x\to0}\left(cot\left(x\right)-tan\left(x\right)\right)$
$\left(20x+10\right)^2$
$\frac{2}{3}x+5=11$
$x^2-6x-1;\:x=-3;\:$
$2x^3+6x-2$
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