Answer:
3x³ + 12x
Step-by-step explanation:
Given
3x(x² + 4) ← multiply each term in the parenthesis by 3x
= 3x³ + 12x
 
        
             
        
        
        
2(x + y) + 3(x + y)
first distribute:
(multiply 2 into everything in the first parenthesis, and 3 into everything in the second)
2x + 2y + 3x + 3y
Second simplify (add all like terms (adding in this case) )
(2x + 3x) + (2y +3y)
5x + 5y
your answer is: 5x + 5y
hope this helps
        
                    
             
        
        
        
Answer:
you didnt show the picture
Step-by-step explanation:
 
        
             
        
        
        
Answer:
11
Step-by-step explanation:
First subtract 
19-8= Z
So solution would be
Z=11
 
        
                    
             
        
        
        
1, 3, and 5 would be my best guesses but I’m not 100 percent sure