$1+\frac{6}{n}+\frac{9}{n^2}$
$15\le x+2$
$\int x+\frac{16x}{x^2-16}dx$
$-98-56+-14$
$\frac{sin\left(x-y\right)}{cos\left(x\right)}$
$3x^{2}+5x-2$
$\frac{\frac{\sqrt{3}}{2}}{\frac{1}{x}}$
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