$\frac{-3^2\cdot3^2}{-3^{-6}}$
$\int\:k^3e^3dk$
$\left(9a+6ab\right)^2$
$8x+12y-20z=2\left(4x+6y-10z\right)$
$\sec\left(\frac{7\pi}{6}\right)cos\left(\frac{7\pi}{6}\right)+\sin\left(\frac{7\pi}{6}\right)$
$\int\:\left(2x^2-6\right)\left(x^3+5\right)dx$
$4x>100$
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