$\sqrt{49\:x\:16}$
$\int_{\frac{\pi}{4}}^{\frac{\pi}{2}}-6xcsc^2x\:dx$
$\lim_{x\to2}\left(\frac{x^2-5x-6}{x+2}\right)$
$\left(16x^2-y\right)^2$
$\left(x^2+3\right)^{2\:}e^{3x}$
$\tan60^{\circ}\left(\frac{x}{250}\right)$
$-5+0.25$
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