A polynomial can have
constants
variables
exponents
that can be combined using addition, subtraction, multiplication and division ...
... except ...
... not division by a variable
For this you would want to break this figure up with familar shapes. You can do two triangles and one big rectangle.
First triangle:
(3)(2)(1/2)= 3 feet squared
Second Triangle:
(3)(4)(1/2)= 6 feet squared
Rectangle:
(11)(3)= 33 feet squared
Now you add:
33+3+6= 42 feet squared
So, for this hole you will need 42 feet squared of outdoor carpet

The above is the equation of the parabola and the steps to solve it.
(3/4) : (2 1/4)p = 0
(3/4) : ((2 + 1/4))•p = 0
1.333333p = 0
p = 0