$\left(\frac{1}{2}\right)\left(x+3\right)$
$60k^2lm^3+25^4l^2+36m^6.$
$-2\left(-8\:+\:3u\right)$
$x-\sqrt{x+3}=9$
$\left(2x\:+\:y\:-\:z\right)\left(2x\:-\:y\:+\:z\right)\:$
$-5^2-3x^2$
$10\cdot10\cdot10\cdot10\cdot10\cdot10\cdot10\cdot10\cdot10\cdot10\cdot10$
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