$x^2+\left(x+2\right)^2=130$
$3\left(1-4\right)^{-2}+9^{-1}$
$\frac{125x^3-27}{5x-3}$
$x + 3 \leq - x - 7$
$1-6z+4z^2$
$\ln\left(x\right)+\ln\left(8x\right)=2$
$\left(4a-3b\right)\left(7a-8b\right)$
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