$+8\frac{1}{3}x$
$25x^2+x+9$
$\frac{1}{4}a-\frac{3}{5}a^2+\frac{1}{3}a^2$
$\int_0^1\frac{y}{e^y}\:dy$
$3x+8\le x+20$
$\frac{8+x^2}{2+x}$
$\int_0^{\infty}\left(\frac{\arctan\left(x\right)}{x^2}\right)dx$
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