Concentrate don’t get distracted and study harder
        
                    
             
        
        
        
I don’t want you going back in the front door and I’m going to try calling it
        
             
        
        
        
Answer:
Are you asking us or- If this is on your text/exam, you should write what motivates you...its that simple lol
Explanation:
 
        
             
        
        
        
P = 2x+2(450-x)=900
A = x(450 - x)
A = x(450 - x)
-x² + 450x = A
-x² +450x = A
A is going to be maximum, when x is a vertex.
-(x² - 450x) = A
-(x² - 2*225x+225²) - 225² =A
-(x-225)² -225² = A
Vertex when x=225
Largest are 225(450-225) = 225² = 50625 ft²
The square has a largest area.