$\left(\sec\left(a\right)-1\right)\left(\sec\left(a\right)+1\right)$
$\log3\left(243\right)$
$2x^2+14x+41=0$
$8-3.5+1$
$-5-64x$
$\sqrt[5]{2^2\cdot8}$
$4xdx-y^2dy=0$
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