application of algebra

Question

what is the application of the formula (x+y)^2? Wherer does this formula apply in daily life?

Answer 1

I agree with Ian in that I'm not sure what is actually being asked. I imagine you know that

(x+y)² = (x+y)(x+y) which equals x² + 2xy + y².

Answer 2

I think more information is needed to solve this, I'm not sure what application of the formula is asking for.