$x^3+6x^2+12x+8-x^3+15x^2+75x+125$
$\left(6a-4b\right)^3$
$4a^4+2a^2b^2+8b^4$
$\frac{9^{-8}}{2^{-8}}$
$4a^2e^2\:-\:d^2e^4$
$a\cdot b=250$
$-8x+20<3x$
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