For this case we have the following expression:
  
 Using the associative property we can rewrite the expression in the following way:
  
 Finally, simplifying we have:
  
  
 Answer:
 Rewriting the expression we have that the result is:
 d. -7
 
        
             
        
        
        
Given:
The volume of a cube-shaped box is  cubic meter.
 cubic meter.
To find:
The perimeter of each of its faces.
Solution:
Let "a" be the side length of the cube shaped box. Then the volume of the box is:


It is given that the volume of a cube-shaped box is  cubic meter.
  cubic meter.

Taking cube root on both sides, we get

Now, the perimeter of each face of a cube is:

Where, a is the side length of the cube.
Putting  , we get
, we get


Therefore, the perimeter of each face of a cube-shaped box is 2 meters.
 
        
             
        
        
        
I don’t know I’m doing something like that and I need help
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
OMG! Don't do that! I am so sorry this is happening to you. Look I don't know how to comfort you. IF he keeps doing this tell your mom or litterally call 911. If he did it just on that day then try confronting him on it. And ask him why he did that! Don't self-harm you deserve so much more than that! You are awesome!
 
        
             
        
        
        
This will only have one solution because it does not deal with a quadratic. Then to isolate x you need to get the similar terms on different sides by subtracting or adding, Then divide both sides by the number next to x (coefficient).