$efaew$
$\left(2ab-1\right)^3$
$4x^2+4x=0\:\:$
$\int3z\:e^{2z}\:dz$
$f\left(x\right)=\frac{2x^3}{\left(1+x\right)^2}$
$\frac{8x^4+6x^3-1}{2x^2}$
$-25y^2-121$
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