$3.x^2+12$
$3^s=r$
$k^2-8k+16=0$
$\frac{54sin\left(50\right)}{sin\left(34\right)}$
$\left(x^3+3y^4+2z\right)^2$
$\frac{8m}{2m}^3+\frac{n^3}{n}$
$\frac{z^3}{z-1}$
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