$\:\left(x\:a\:+\:y\:b\:\right)\:^2$
$\lim_{x\to\frac{\pi}{2}}\left(4cos\left(7x\right)sec\left(3x\right)\right)$
$\int\frac{-6000}{\left(3x+50\right)^2}dx$
$k^{-\frac{1}{2}}$
$14\cdot\infty$
$2-9\left(3-2\right)$
$w^2-9w+20$
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