$\sqrt[2]{4x^2-100}$
$\frac{dx}{dy}=1-2y$
$\frac{dy}{dx}=-1+\frac{y}{x}$
$5,776\:+\:\:7$
$10^4\cdot10^{-32}$
$\cos255^{\prime}=\frac{\sqrt{2}-\sqrt{6}}{4}$
$\int\frac{1}{21-x^2}dx$
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