$14+20x=22x$
$b^2-6b+9$
$\frac{1}{m+n}+\frac{m}{n^2-m^3}$
$4 + 1850 - 10$
$\left(\:x\:+\:7\:\left(\:x-\:7\right)\right)$
$\left(x+1\right)\left(x-1\right)+\left(\sqrt{x}+1\right)\left(1-\sqrt{x}\right)\left(x-1\right)$
$4x^2+9x+36$
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