(x-3)^2 + (x+5)^2=9^2
(x^2-6x+9) + (x^2+10x+25)=81
2x^2+4x+34=81
2x^2+4x-47=0
From here just use quadratic formula
        
                    
             
        
        
        
Answer:
The answer is 

Step-by-step explanation:
The problem is 

First we have to bring x to the other side se we subtract x from both sides 

Then we have to put it in order so the answer is 

 
        
             
        
        
        
Answer:
W value 56 ft
Step-by-step explanation:
The formula for the perimeter of a rectangle is
P = 2L + 2W
Here P = 156 ft = 2(22 ft) + 2W, or
                  78 ft = 22 ft + W
This yields the W value 56 ft