$25x^2-45x+81$
$\left(6a-3\right)^2$
$\int\left(x^{5\:}+5\right)^2dx$
$\int\frac{p}{p^3+4p^2+5p+2}\:dx$
$4x^2+\left(x-3\right)\cdot\left(x+3\right)>0$
$a^2-16a-64$
$\int8\sqrt{4-4x^2}dx$
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