$-8.2\le3.17-r$
$\left(0.3\right)^2$
$14x\left(x^2+3\right)^6$
$3d^2+6+7d^2+3+2d+d$
$\left(x^{10}\right)=10x^9$
$\left(x-1\right)\cdot\left(x+1\right)+\left(x-2\right)^2-3$
$\frac{1}{2}a-\frac{2}{4}a$
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