$\frac{dy}{dx}=7x^2+8a^3-2$
$180x^3-20x$
$2x-15>-9$
$\:2^2+am+m^2$
$-34+-25+-9+488$
$2x\left(4x-1\right)<4+2x$
$\left(5^2\right)^2-\left(-4\right)^3$
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