$\left(\frac{5}{2}a^4+4c\right)^2$
$8^{-2}q^{3\:}r^{-5}$
$\left(\lim_{x\to0}\left(e^x+x\right)^{\frac{1}{x}}\right)$
$1-x-x^2>0$
$2x^3y-2x^2y+2xy-2y$
$\left(-1\right)\left(+7\right)\left(-3\right)$
$-2x^2-1-5$
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