$49a^{10}-225b^4$
$\frac{\tan\sin}{\tan-2\sin}$
$\frac{x^3+x^2+x-1}{x^2-4}$
$9+x=52$
$\lim_{x\to\frac{\pi}{2}}\left(\cot\left(x\right)\right)^{\sin\left(x\right)}$
$\int_0^1\left(\pi\left(3+x^9\right)^2\right)dx$
$113\cdot17$
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