$\sqrt[6]{x^9}$
$\frac{9x^3+3x^2+x-1\:}{3x\:-1\:}$
$9\sin\left(x\right)^2-25\cos\left(x\right)^2=0$
$22x-220$
$\left(13\right)^7\cdot\left(-13\right)^2$
$6x^2+y^2=6$
$\lim_{x\to-3}\frac{x^3+6x^2+9x}{x^3+27}$
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