$\left(2+x^2\right)\left(11+x^2\right)$
$x-\frac{x}{x+7}=\frac{7}{x+7}$
$6x+12-3x=51$
$g\left(p\right)=p^5-3p^3$
$\frac{x-4x+3}{x-1}$
$1+q^9$
$\int\sqrt{4-2x^2-x^4\:}x\left(x^2+1\right)dx$
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