$8-5x^2+3x^5-5^2+x^6-3$
$4y^8-64y^4+144$
$\left(2x-5y+7z-w\right)^2$
$p^2-36$
$16+5\cdot2$
$-3\tan^2\left(4x\right)=3$
$\lim_{x\to0}\left(\frac{-2e^{-2x}}{\frac{1}{2x^2}}\right)$
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