$a^2-12a+36$
$6\:-\:n\:-\:11$
$\int\left(0.04t+200\right)e^{-0.04t}dt$
$\sin2x=-\frac{\sqrt{3}}{2}$
$\left(x^2+y^2-4x+3y-6\right)-\left(-4x+6y^2+2x^2-y-5\right)$
$\lim_{x\to0}\left(\frac{\sin\left(3x\right)}{c^x+1}\right)$
$103\left(x-4\right)^2$
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