A binomial squared is written like

So, we have 
So, we want to complete the square 
We can add and subtract 9 to write

If you're talking about PEMDAS it's Division. (Parenthesis., Exponents, Multiplication, Division, Subtraction just in case you forget)
<u>Answer: </u><u>6.04 inches</u>
<u>Step-by-step explanation:</u>
The actual height of the monument = 604 feet
The scale used by Corbins is 1 inch = 100 feet
The height of the Corbins model in inches=
= 6.04 inches
the height of the Corbins model = 6.04 inches