$\left(4y+x\right)^4$
$\lim_{x\to0}\left(\frac{e^{\left(-\frac{1}{x^2}\right)}}{x}\right)$
$\left(6-7z\right)\left(6+7z\right)$
$\left(-12\right)\:-\:\left(-35\right)\:$
$5x^2-8x-27$
$\frac{990}{-55}$
$2x-12<x+2$
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