$tana-seca$
$4.375+12.25+2.25$
$5x^2+6y^2=50$
$2-b^2+b-3y^2-by+by$
$\left(9x-1\right)\left(9x+3\right)$
$x^3-\frac{3x^2}{2}+\frac{3x}{4}-\frac{1}{8}$
$\int ln\left(2q-1\right)dq$
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