$\lim_{x\to0}\left(e^xcos2x\right)$
$10a^2+10-20$
$x^2-+18x+-9$
$4sin^2\left(x\right)=3cos\left(x\right)\:$
$\int\:\:x^2\sqrt{1-x^3}dx$
$\left(p^{-5}\right)^9$
$3\left(9x+2x\right)$
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