$\frac{9}{11}x^2-5=0$
$\left(s+1\right)\left(s-1\right)$
$\int\frac{y}{y+4}dx$
$\frac{\left(n\left(n+2\right)^2\right)}{5^n}$
$-7y^3-3y+5y-y^3-4+7y^{3\:}-7y$
$\left(\frac{4\left(\frac{2}{3}\right)}{9}+\frac{5\left(\frac{1}{2}\right)}{2}\right)\left(6\right)$
$3\cdot\left(4-2\right)+2\cdot\left(5-8\right)$
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