$200+-5$
$\:2a^3+2b^3-3ab^2-3a^2b$
$a^{\left(3\right)}-a^{\left(2\right)}x+ax^{\left(2\right)}$
$\int\frac{9e^{9x}}{8+e^{9x}}dx$
$x-y+3z=1$
$x^2-12x=3$
$\frac{-3^2\cdot3^2}{-3^{-6}}$
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