<span>To do that, you need to set it all to zero and factor:
x^2+8x+15 = 0
(x+5)(x+3) = 0
then put both those in parentheses chunks in their own equations
x + 5 = 0
x + 3 = 0
and then simplify
x = -5
x = -3
So the two points where the parabola crosses the x-axis are -5 and -3.</span>
        
             
        
        
        
Answer:
60 feet
Step-by-step explanation:
Pentagon = 5 sides
We need to find the perimeter of the pentagon and we know that one side is 12 feet so,
1 side = 12 feet
( Multiply by 5 to get 5 sides )
5 sides = 60 feet
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation: