$\log_{2}\left(9-2x\right)+\log_{2}x=2$
$\left(6x-1\right)\left(-8x-3\right)$
$\int_0^a\left(\frac{1}{a^2+x^2}\right)dx$
$\int\frac{1}{3}xsenxdx$
$\frac{1}{7}\left(x+5\right)\ge\frac{1}{5}\left(x+1\right)$
$\left(10-x-y\right)^2$
$\left(2+3t\:\right)^3$
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