Question

Are polynomial expressions closed under addition? Explain.

Answer 1

Addition of 2 polynomials always gives a polynomial. So, YES.

Answer 2

So @hartnn polynomials are closed under addition because they alway create a new one? :/

Answer 3

only when polynomials are added to Addition Identity (i.e, 0), we get same polynomial. else yes, every other time they create a new polynomial

Answer 4

is this okay for my answer @hartnn
when polynomials are added to Addition Identity we get same polynomial. so yes, they create a new polynomial

Answer 5

for 'Are polynomial expressions closed under addition? '
better answer will be
'Addition of 2 polynomials always gives a polynomial. So,polynomial expressions are closed under addition '

Answer 6

thanks @hartnn