$2n+3.5=17.5$
$14x^3-84x$
$\left(9a-15b+3\right)-\left(4a+5b-4\right)$
$\lim_{x\to\infty}\left(\frac{\left(2x-1\right)\left(x+5\right)\left(5x-9\right)}{10x^3+7x-6}\right)$
$\lim_{x\to3}\frac{x^2+12x-45}{x-3}$
$\left(\frac{2}{3}\right)^{10\:}\:x\:\left(\frac{2}{3}\right)^{-10}$
$11csc^2\left(x\right)-7cot^2\left(x\right)=4csc^2\left(x\right)+7$
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