Answer
See below
Work Step by Step
Since the axis is horizontal $(h, k) =(-2, 3)$, then it should be: $$\frac{(x-(-2)^2}{25}+\frac{(y-3)^2}{9}=1\\\frac{(x+2)^2}{25}+\frac{(y-3)^2}{9}=1$$
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