Answer:
26 units
Step-by-step explanation:
im not sure if this will help but i counted the spaces and added the halves
An a quadratic equation,
If the quadratic has one solution,
then
So plug in 27 for c, and 3 for a
or
So our answer is 18 or -18
2.58, 2.58, 2.58, 2.58, 2.58, 2, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1.65, -1.65, -1.65, -1.65, -1.65.
Square both sides of the equation.
21