$\infty^5-\infty^2-\infty$
$\int\csc^{-1}\left(u\right)dx$
$\lim_{x\to\frac{\pi}{2}}\left(7\cos\left(-5x\right)\sec\left(9x\right)\right)$
$\frac{d^3}{dx^3}$
$x+128=989$
$\left(\frac{3}{4}a+b\right)^3$
$21x^2\:-55x\:\:+14$
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