$\lim_{x\to0}\left(\frac{y^2+x}{x}\right)$
$-x^2-4x+8\:<\:0$
$70.0848+0.000007+0.000007+0.000006$
$\frac{d^2}{dx^2}\left(\ln\left(5+z^2\right)\right)^2$
$16g^2-40g+25$
$11ab-15ab+26ab$
$y=3x-2y+3$
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