$-x^2-4x-4$
$\left(2-2x\right)^7$
$2>x+\frac{4}{3}$
$\left(3x^2-5x\right)\:x\:\left(2x^3+4x^2-x+2\right)$
$\left(2b-3c\right)\left(2b-5y\right)$
$4x+15y-6\left(x-2\right)-10-4y$
$\left(x-2\right)\left(x-4\right)+\left(x-2\right)\left(x+4\right)$
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