$\frac{y^2}{2}=-\frac{x^2}{2}$
$\int\left(\frac{1}{\sqrt{3x+9}}\right)dx$
$2\sin\left(x\right)=\sqrt{2}$
$\left(2^2\right)-5^3-3^3-1^5$
$81-64w^2$
$2x^2\:\:+x\:-12\:+x^2\:\:+4$
$33-2x=31$
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