$x^2+4x+25$
$-\frac{x^2}{16}+14x$
$\lim_{x\to\infty}\left(1-\frac{2}{5x}\right)^{2x}$
$16x^2+8x+1=0$
$\frac{n^2x^n}{10^n}$
$\int\left(x^3-5\right)^8\:x^2\:dx$
$x^2+y^2=60$
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