$16x^2+x+9$
$\left(2a-3b\right)\left(4a^2+6ab+9b^2\right)$
$10x^2-x-3$
$\lim_{x\to\infty}\left(\frac{x+\sin\left(x\right)}{2x-3\sin\left(x\right)}\right)$
$\int\left(\frac{1}{\left(2x+1\right)\left(x+1\right)^2}\right)dx$
$49u+49-9u-9$
$15x+23>13x+22$
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