3x + 5+ y + 12 + 2x + x + 3+ 4y

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Which is the completely factored from of xy^3-x^3y

Hi my sisters and brothers can tell me the answer because i don’t understand the question