$5-9-\left(4+\left(4-\left(\frac{12}{-6}\cdot2+4-3\right)-\frac{5}{-5}\right)\right)$
$\frac{d}{dx}10^{tanx}$
$220^2$
$\sqrt{a}\sqrt[4]{a^3}$
$\lim_{x\to0}\left(\frac{cos8x\:-\:1}{2x}\right)$
$4x^2+4x+36$
$7\left(7\left(-2\right)\right)\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:$
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