$-a^2-5a-4=0$
$3\cdot2^3\cdot\left(3\cdot2\right)^3$
$y2\:-\:625$
$5x^2\left(2x^2-6x+7\right)$
$\lim_{x\to-1}\left(\frac{x^2-6x+5}{x-2}\right)$
$\left(x+y\right)^4+2\left(x^2+2xy+y^3\right)-3$
$y^2\:+\:32y\:+\:256$
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