$35\cdot264.75$
$a2-9$
$7b-b^2=441$
$-2\left(x\right)^2+800x$
$\left(b+5\right)\left(b-3\right)$
$\int\frac{1}{\sqrt{1-\frac{1}{x}}}dx$
$\frac{1+\frac{1}{cos\:\theta\:}}{\frac{1}{sin\theta\:}}-\frac{sin\:\theta\:}{cos\theta\:}$
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