Question

the length of a rectangle is 2 units less than a number, and the width is 4 units more than the length. which of the following expressions represents the area of the rectangle, in square units.

Answer 1

L=n-2, W=4+L=n+2

A=LW, since L=n-2 and W=n+2 we have:

A=(n-2)(n+2) so it could be this expression or the expansion

A=n^2-4