Answer:
6
/5
Step-by-step explanation:
 
        
                    
             
        
        
        
-7 - 3x = 9x(x + 2)
Standard Form:
-9x^2 - 21x - 7 = 0
        
                    
             
        
        
        
Answer:
-11 - 4c
 - 4c
Step-by-step explanation:
You have to distribute the -c to both of the numbers in the parentheses, so the eleven would become negative, and c multiplied by c is c squared. The positive 4 becomes negative 4, and 4 times c is 4c. Hope that helps!
 
        
                    
             
        
        
        
Answer: m=-5/3
Step-by-step explanation:
 
        
             
        
        
        
Answer:
4,n=4
Step-by-step explanation:
D=(n,-2) and E=(n,2)
the distance from D to E ,
√{(n-n)^2+(-2-2)^2}=√16=4
the co-ordinate of point C=(0,-2)
given,DC=DE
 →√{(n-0)^2+(-2+2)^2}=√16
 →n^2=16
 therefore,n=4