Answer:
7
Step-by-step explanation:
2-(-8)+(-3)
2+8-3
10-3
7
Whete are the given points, is thee a picture
The root is the x intercepts or the zeros of the problem
If I were to graph
(x-5)(x+4)=0
We need a number for x which makes this equation 0
The numbers are 5 or -4
These are the x intercepts of the parabola or roots