$\lim_{x\to infinity}\left(\frac{\sqrt{x+1}}{x^2-1}\right)$
$x^2-5x\ge\:-8$
$5n-2-3n+7$
$\sqrt[10]{50^{50}}$
$\cos^4\left(x\right)-\sin^4\left(x\right)+1=2$
$\int\frac{1}{\left(x^2\:+\:9\right)^2}dx$
$5tanb=10$
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