$3x^2+6x-9=0$
$-23+254$
$\csc\left(92.5\right)$
$b-4+9$
$\int\left(u\sec\left(x\right)^2\right)dx$
$\frac{64a^3+343}{4a^7+7}$
$9x\:+\:9y\:=\:9xy$
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