$\sqrt[4]{6.3}$
$\frac{x^2-2x}{x^3-3x^2+2}$
$2-2\cos^2x=2\sin^2x$
$\left|14+\left(-5\right)\right|-\left|3+\left(-8\right)\right|$
$\sec^4\left(x\right)=\tan^2\left(x\right)\sec^2\left(x\right)+\sec^2\left(x\right)$
$2\:x\:2\:x\:2\:x\:2\:x\:3\:x\:3\:x\:3$
$\left(49\right)\left(16a^2+36a+81\right)$
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