$-\left(7\cdot\:+11\right)^2$
$\log_{64}\left(u\right)-\log_{64}\left(14\right)=\frac{1}{2}$
$16+4a+a^2$
$\left(5ab+5c^2\right)\left(5ab-5c^2\right)$
$x^2+10x-5$
$1^{18}-9^2$
$\left(2b+4\right)\left(2b+6\right)$
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