$x^2+6x-4=0$
$-24=\frac{v}{27}$
$\left(w+3\right)^2-7\left(w+3\right)+12$
$\int\frac{x^3\:-\:4x}{\left(x^2+1\right)^2}dx$
$\frac{90}{x^2+110x+1000}$
$-7=v-7$
$\left(-x-6^2\right)$
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