$\left(3x+1\right)\left(3x-10\right)$
$\int\left(8x+23\right)^{-2}dx$
$sin2x-cotx\:=\:0$
$-4=\sin^2x-5$
$\:2\left(4-2x+y\right)-4\left(5+x-y\right)$
$\frac{2p-3}{2p}$
$3\left(y+5\right)$
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