$125^3-64$
$\frac{4\left(-12\right)}{-4\left(2\right)}$
$-5\left(5x+9\right)=-45-25x$
$4x^2-16+64$
$12x+4=6x+22$
$\sqrt{\left(9+x\right)\left(9-x\right)+\left(x-9\right)}\left(x+9\right)$
$3x\left(3x^2+8x-1\right)-3\left(x^2+5\right)+2x^2\left(x-9\right)$
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