$x^2+1^2$
$1,200+2,00$
$\frac{6}{x-2}\ge-4$
$5x-4<2$
$\int e^{2t}dt$
$\lim_{x\to0}\left(\sin\left(a+x\right)-\sin\left(a\right)\right)$
$\frac{8x^2-4x-7}{x^2}$
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