Answer
$y=-5\pm\sqrt {x}$
Work Step by Step
Step 1. Treating the given equation as a standard quadratic, we have $a=1, b=10, c=-x+25$
Step 2. Using the quadratic formula, we have
$y=\frac{-10\pm\sqrt {100-4(-x+25)}}{2}=-5\pm\sqrt {x}$
Step 3. We can graph $y=-5\pm\sqrt {x}$ as shown in the figure.