To solve this problem you must apply the proccedure shown below:
1. You have the following expression given in the problem above:

2. The first thing you must do to factor the expression is to group the terms, as following:

3. Now, choose the greatest common factor of each group:

4. Now, you need to factor the expression by factoring out the 

The answer is: 
Diagonal, I hope I helped (:
To figure this out just multiply:
6 people had 3 servings = 6 x 3
6 x 3 = 18 There's your answer!
Answer:
Step-by-step explanation:
x²- y² = (x+y) (x-y)
x² + xy = x(x+y)
x² + 2xy + y² = (x+y) (x+y)
A. (317.5 km/h) * (3.15) = 1,000.125 km