Answer
See below.
Work Step by Step
$a^2=25$, thus the x-intercepts are $5$ and $-5$. The graph goes through $(5,0)$ and $(-5,0)$, which are the vertices.
$b^2=8$, thus the y-intercepts are $3$ and $-3$. The graph goes through $(0,3)$ and $(0,-3)$.
