$\left(x+e^x\right)^2$
$\frac{64a^3+b^9}{4a+b^3}$
$a^2b+2ab-b$
$350-300-129-85$
$\int\left(\left(x-25\right)^{-2}\right)dx$
$\left(4z-1\right)^2$
$x^2\:+\:40x\:+20$
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