Question 2 (Irreducibility versus primality). Let R be an integral domain, which we dene to be a commutative ring Without zero divisors. We discussed in lecture the distinction in terminology between irreducible and prime: An element 7" is irreducible if r = ab => a E RX or b E RX. while Aelementrisprimeifr|ab => r|aorrlb. (For polynomial rings F [50] with F a eld, the only elmements of F[a:]) a=00rrs=0.)