How are polynomials used in everyday life?

Answer 1

sometimes they can help to model markets in the business world, but other than that, they just help you get a better understanding of other algebra, some of which you actually do use.

Higher-degree polynomials are pretty well always going to be abstract, but you probably use some of the lower-level ones all the time, without even noticing. Say you've got a box that holds a 6x6 grid of eggs, and two extra eggs that don't fit in it. You could sit there and count the eggs, or you could say if x=6, then x2+2=38.

And admittedly you're probably not asking about linearpolynomials, but they're all over the place.