This can be written as (x+4)(x+4)
Multiply everything in the second parenthesis by the x.
x^2 + 4x
Multiply everything in the second parenthesis by 4.
4x + 16
Add these two equations together.
x^2 + 4x + 4x + 16
Combine like terms.
x^2 + 8x + 16
Hope this helps!
        
             
        
        
        
Answer:
7*7n=49n
-6V
-9*6n= -54n
-5k*-9=45k
-8*3b= -24b
double negative 6x answer 6x
-10*2a= -20a
-4*7p= -28p
Step-by-step explanation:
 
        
                    
             
        
        
        
Step-by-step explanation:
<u>Statements                                                  Reasons                                    </u>
1 . ∠ABC and ∠CBD are a linear pair         Given
2. m∠CBD = m∠EFG                                   Given
3 . ∠ABC and ∠CBD are supplementary   Definition of linear pair
4. m∠ABC + m∠CBD = 180°                        Definition of supplementary
5. m∠ABC + m∠EFG = 180°                         Substitution property
6. ∠ABC and ∠CBD are supplementary    Definition of supplementary
 
        
             
        
        
        
Step-by-step explanation:
Let, 1st number be x and 2nd number be y
Then,
 equation 1
 x = 16+y
 
 equation 2
 x + y = 120
 or, y = 120 - x
now,
 x = 16 + y
 or, x= 16 + 120 - x (putting the value of y from equation 2 )
or, x + x = 136
or, 2x =136
or, x= 136/2
or, x =68
Then,
 y = 120-x
or, y= 120- 68 (putting the value of x)
or, y= 52
Hence, the two numbers are 68 and 52.
 
        
             
        
        
        
Answer:
35 students
Step-by-step explanation:
Take the number of students in the class and multiply by 60% and see if you get an integer number
28 * .60 =16.8  not an integer
32 * .6 =19.2
35 * .6 =21  yes
39*.6 =23.4