Answer
$x^2-4xy+4y^2$
Work Step by Step
$(x-2y)^2$
The book tells us to use the special product formulas to solve the problem.
In order to do so, we must refer to these formulas:
$(a + b)^2 = a^2 + 2ab + b^2$
$(a – b)^2 = a^2 – 2ab + b^2$
Now, we can rewrite our expression as:
$x^2-4xy+4y^2$
