Answer:
Fully simplified it equals 4x^2 -21x -18
Explanation:
-You need to distribute the x to all of the terms in the second binomial and you also need to distribute -6 to all the terms in the second binommial giving you 4x^2 +3x - 24 -18 
-You combine like terms to simplify and your answer is 4x^2 -21x -18
 
        
             
        
        
        
2 miles per minute. Dang, that's one fast guy.