The standard form of an ellipse equation is $\frac{(x-h)^2}{a^2} + \frac{(y-k)^2}{b^2} = 1$ where $(h,k)$ is the center of the ellipse, $a$ is the semi-major axis and $b$ is the semi-minor axis. So, we can rewrite the given equation as:
\[\frac{(x-3)^2}{18} +
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