Answer
Fill the blanks with
... $(-3, 3)$ ... $(7,3)$ .
Work Step by Step
$a^{2}=25\quad\Rightarrow a=5.$
Since the the transverse axis is horizontal,
the vertices are 5 units to the right and to the left of the center ($2,3$).
Vertices:
$ (2-5, 3)$ and $(2+5,3),$
$(-3, 3)$ and $(7,3)$
Fill the blanks with
... $(-3, 3)$ ... $(7,3)$ .
