Question 1129742:  do all the roots of the polynomial x^5-4x^4-7x^3+14x^2-44x+120 make sense in regards to a roller coaster engineering project problem.explain why or why not in a complete sentence. 
 Answer by MathLover1(20850)      (Show Source): 
You can  put this solution on YOUR website! breakdown to the exact value of the roots:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
the coaster returns to ground level at  ,  ,  , the three real zeros of the function
 
 
 
do all the roots of the polynomial   make sense in regards to a roller coaster engineering project problem????
 
 
the roots of the polynomial mathematically make sense in regards to a roller coaster engineering project problem because these values ( ,  ,  ) mean the ride starts on the ground
 
 
but, mathematical end behavior of this function         
 
 
 
function has local maximum and minimum where first derivative is equal to zero:
 
and it is    at
 
  
 
 
so, function is 
  on:  ( , ),( , )
 
  on: ( , )
 
 
  
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