$0=2\sin^2\left(2x\right)-\sin\left(2x\right)-1$
$8cos^2ydx\:+\:csc^2xdy\:=\:0$
$-67b+6<9b+43$
$\left(\frac{1}{5}y+5\right)^3$
$\lim_{x\to0}\left(156\right)$
$x^2-18x+209=2x+11$
$x^2-20+x\:\frac{x}{5}$
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