$x^2-55x+254$
$\lim_{x\to0}\left(\sqrt{x^2-5x+1}-x\right)$
$\left(52^2+66^3\right)$
$5c^2-39c+25=c^2+2c-75$
$\frac{y}{\left(x^2y^2-2x\right)}$
$\lim_{y\to2}\:\frac{\left(y^3-8\right)}{2y^2-7y+12}$
$xe^x-e^x+\frac{1}{2}y^2=cy\left(0\right)=1$
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