$x^2-4x-10=0$
$3cos^2x+2sinx-1=0$
$a-a+2a^2-3a^2-1-4-4$
$\lim_{x\to2}\left(\frac{x^2-4}{x^3+8}\:\right)$
$x^2-2x-5=0$
$\int\left(s^6\left(1+s^7\right)^7\right)ds$
$144m^2n+48mn-12mn$
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