## Precalculus (6th Edition) Blitzer

Step 1. Graph the conic section as shown in the figure. Step 2. From the equation, we can identify it is an ellipse with $a=5,b=3,c=4$, centered at $(-2,5)$. Step 3. We can find the foci at $(-2\pm4,5)$ which gives $(-6,5)$ and $(2,5)$.