(x + 2y)(x – 2y)

Answer 1

This is a difference of squares, so we can use the formula:

(a + b)(a - b) = a^2 - b^2

In this case, we have:

(x + 2y)(x - 2y) = x^2 - (2y)^2 = x^2 - 4y^2

So the final answer is:

x^2 - 4y^2