$\frac{135}{2}\cdot\frac{12}{5}$
$\sqrt{2x}-2$
$5 y + 2 > 3 y - 8$
$\int\sqrt{1+r^2}dr$
$tan\:cot\:=1$
$y'=2x+2-y$
$dy\:dx\:=\:xy\:+\:y$
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