Answer:
The answer to this question can be described as follows:
-5 with multiplicity 3
9 with multiplicity 2
-1 with multiplicity 1
Step-by-step explanation:
Given:

Solve the above equation:

The roots of the polynomial are as follows:

That's why the roots are:
5 with multiplicity 3
9 with multiplicity 2
-1 with multiplicity 1
1/620 is the simplest form of 2/1240
all you had to do was simplify
2 divided by 2=1
1240 divided by 2=620 <span />
3/5 * X = 15
3/5 ÷3/5 * X = 15 ÷ 3/5
X = 25
The total length is 25 miles