$\int9sin^5\left(r\right)cos\left(r\right)dr$
$\frac{dy}{dx}=-3xy^3\:y\left(0\right)=1$
$x^2-9x-27$
$\left(-9a+7b+12\right)+\left(7a-b-8\right)$
$a^2b^2-1$
$3x^2-\left(3x+1\right)\left(x-2\right)$
$4x^2+16x+16y=0$
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