Answer:
-10x+13
Step-by-step explanation:
Im not 100% sure but i tried!
 
        
             
        
        
        
/If you solve for x you will get -7/2.
        
             
        
        
        
Answer:
-20
Step-by-step explanation:
when you solve:  -7u-7=7, you get u= -2 and when you plug it in you get this equation 9(-2)-2=? 
then you get -20
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
6x^3 - 3x^2 - 45x = 3x(2x^2-x-15) = 3x((2x+5)(x-3)