$9x^2-94x+176$
$\lim_{x\to\infty}\left(\frac{ln\left(x\right)}{9x}\right)$
$\left(x+7\right)\left(x-6\right)=13$
$cos\left(y\right)dx+sec^2\left(x\right)dy=0$
$4z^2+8z+4=0$
$\left(2a^2-15a\right)\cdot\left(-17a-a^2\right)$
$\frac{x^3-6^4}{x-4}$
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