$13x^2-12x+3=0$
$x^2+22x+47=0$
$\left(0\right)\left(-1\right)+\left(-1\right)\left(3\right)+\left(-2\right)\left(2\right)$
$\int\frac{1}{\left(9+y^2\right)^{\frac{3}{2}}}dy$
$\left(4a+b\right)\left(4b+a\right)$
$cos^2x-8cosx+2=0$
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