12. hope that helps you with your homework
        
                    
             
        
        
        
A=100
b=8
w=108
756 divided by 7=108
        
             
        
        
        
Answer:
Step-by-step explanation:
4y - 2(5 - y + 4) = 4y - 2(9 - y)
                          = 4y + 9*(-2) - y *(-2)
                          = 4y  - 18 + 2y      {Combine like terms 4y and 2y}
                          = 6y - 18
6y - 18 = 6*y - 6*3
            = 6(y - 3)
6y- 18 =  2 *3y - 2*9
           = 2(3y -9)
2(3y - 9) and 6(y- 3 ) are equivalent to 4y - 2(5- y +4)
Others are not equivalent
 
        
             
        
        
        
The square of a binomial is written like

In your case, you have  , which implies
, which implies 
So, we want to write

But our left hand side is

If we add 26 to both sides, we have
