Question: a let R= ZZ [V=s] and let I= {a+ bJ=s: a,be Z and } a =b (mod. 3) Prove or Disprove : i) I

a let R= ZZ [V=s] and let I= {a+ bJ=s: a,be Z

a let R= ZZ [V=s] and let I= {a+ bJ=s: a,be Z and } a =b (mod. 3) Prove or Disprove : i) I is a subring of R i) I is an ideal of R b) Let S =Z[SZ] and let bE Z and %3D J ={atbr2: a,be Z and a=o (mod2), b=o(mod3) Prove or Disprove i) J is a ) Jis a subring of s I J is an ideal of S

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