Ax^2 + bx + c is a quadratic trinomial. Therefore, ur expression is a quadratic trinomial......it is a trinomial because it has 3 terms.....quadratic means the highest exponent is 2.
        
             
        
        
        
I believe that’s it .... i’m so so sorry if it’s not
 
        
        
        
Perimeter:  9+9+8+8=  34 ft.
  Area:  9*8= 72  ft²