$-5a+b\:\:-7a+5$
$\frac{8}{\sqrt{8}}$
$\csc y\:secy=coty+tany$
$2cos\left(2x\right)sin\left(x\right)+\sqrt{3}sin\left(x\right)$
$\frac{dy}{dx}=6x-xy-z$
$\int_0^3\left(\frac{1}{t^2+9}\right)dx$
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