Question

Please help, I’ve forgotten what goes where (Algebra 2)

Answer 1

see below

Explanation:

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

FOIL the first term

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

Combine like terms

x^2 +2xy + y^2 = (x+y)^2

This is a perfect square trinomial

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

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

Answer 2

Explanation:

In order, we have x² - 2xy (expand the square), x² + 2xy (combine like terms), and (x + y)². Hope this helps!