$\frac{125}{5}-17+12+13\cdot6$
$4\cdot\left(6+4\right)-7+3$
$\left(9xy-8z\right)\left(9xy-8z\right)$
$x^2+10x+-25$
$\left(x+4\right)^2+\left(x-4\right)^2=40$
$5y+7x+2x$
$8a-4b-16c-12d$
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