$u^2+26u+37=0$
$\frac{2x^3-5x^2-23x-4}{-x+5}$
$c+2=7$
$x+6=-3$
$7^2-\left(6+2\right)$
$2\sin\left(2x\right)-\sqrt{3}=0$
$\int\frac{2}{4x^2-4x+1}dx$
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