Answer:

Step-by-step explanation:
If a polynomial intersects the x-axis at (2,0) and (-2,0)
Then the zeroes are at x=2 and x=-2
(Outside of the question)
To find factors using the zeroes, we must have one side of the equation equal to zero.
x=2
x-2=0
factor (x-2)
x=-2
x+2=0
factor (x+2)
Answer:
3 cm
Step-by-step explanation:
= 3(2) + 6 + 5(2) - 2
= 6 + 6 + 10 - 2
= 20