$25x^2+40x+70$
$2^{-3}\cdot3^2$
$25b^2+60b+144$
$\frac{tanx}{1\:+\:cosx\:}\:=\:\frac{1-cosx}{sinxcosx}$
$\sqrt[6]{\sqrt[3]{x^2}}$
$2x^2-7x-5\le0$
$\int_0^y\left(e^{xy}\right)dx$
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