3*3*3=9 perhaps?? And then it would be in Surface Area??
        
                    
             
        
        
        
Alternate interior angles I believe
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Given
x² + x
To complete the square
add ( half the coefficient of the x- term )² to x² + x
x² + 2( )x + (
 )x + ( )² = x² + x +
 )² = x² + x + 
= (x +  )² ← perfect square
 )² ← perfect square
 
        
                    
             
        
        
        
Answer:
the roots are {-4/3, 4/3}
Step-by-step explanation:
Begin the solution of 11=6|-2z| -5 by adding 5 to both sides:
11=6|-2z| -5 becomes 16 = 6|-2z|.
Dividing both sides by 12 yields
16/12 = |-z|
There are two cases here:  first, that one in which z is positive and second the one in which z is negative.
If z is positive, 4/3 = -z, and so z = -4/3, and:
If z is negative, 4/3 = z
Thus the roots are {-4/3, 4/3}
 
        
             
        
        
        
Let 
One Number = x
Second Number =x-10
Third Number=x/2
Sum of three numbers is 50 
x+x-10+x/2=50
2x-10+x/2=50
Multiply by 2 both sides 
2*(2x-10+x/2)=50*2
4x-20+x=100
5x=100+20
5x=120
x=120/5
x=24
One number = x=24
Second number =x-10=24-10=14
Third number= x/2=24/2= 12