$2\:+\:4p\:-\:6p\:-\:3$
$3\sqrt{x^5}y$
$-30=x^2+11x$
$4w\:-\:6\:-\:9w\:+\:3$
$\frac{\sqrt{2}+\sqrt{2}\tan\left(67.5\right)}{2}=\sqrt{2}+1$
$\lim_{x\to0}\left(\frac{x-tan\left(x\right)}{x-sec\left(x\right)}\right)$
$6x-3=3x-18$
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