$x^8+5x^4+4=\left(x^4\:+4i\right)\left(x^4-i\right)$
$\frac{-52}{-4}$
$\lim_{x\to0}\left(\frac{2x^2+7x}{e^x}\right)$
$2x\frac{7}{6}+89$
$675.927\cdot10$
$9y^2+72y$
$\int\frac{3}{4}\left(8x+2\right)^{\frac{9}{2}}dx$
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