$\ln x+8=6$
$\log\left(x-5\right)=\log\left(2x-9\right)$
$12-8-20+3-6-7-9+4-20-23$
$100a^2-64$
$\left(3x+8y\right)\left(9x^2-24xy+64y^2\:\right)$
$4x^2+11x+40$
$\int e^{\frac{x}{2}}\left(\frac{1}{2}\right)dx$
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