$\left(b+a\right)^3-5\left(a+b\right)+2$
$-4.4x+5.12=4x-11.68$
$4x-4x+1$
$13.2+4.08+2.635$
$\left(8b^2-7\right)^2$
$\left(\frac{4x^{-1}y^{-2}z^3}{2xy^2z^{-3}}\right)^{-2}$
$\frac{2x^2-1}{x^1-2}$
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