$\left(6x+2\right)\left(3x+4\right)$
$16+4x^6$
$2z+1>9$
$\left(-5\right)^8$
$\left(2a^2-3b^2\right)^4$
$\lim_{x\to0}\left(\frac{\sin\left(x\right)}{3\cot x}\right)$
$x-2xy+x^2y+y=0$
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