#### scsims

##### 10 pointer

To secure the accident scene, Bill comes across the following expression for the area of roadway that must be closed:

x(y-x-2)

Bill expands and simplifies the expression in this form: ab^2+by^2+cxy+dx+ey

What are the values of the coefficients a,b , c, d and e ?

I know this expression simplifies to x(y-x-2) = xy-x^2-2x

But I don't understand how it relates to the question.