$3^{-2}\cdot\left(7-4\right)^2+\left(7+4\right)^2$
$8x+2=6x+4$
$\left(x+3\right)^{-0.5}$
$x^5+x^8$
$\left(x-6\right)\left(x+3\right)-3\left(x-9\right)$
$x^3-512$
$x^2-106=-25$
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