Problem 3. (i) Prove or disprove: if R is a commutative ring and P and Q are polyno- mials in R[x], then P = Q if and only if P(a) = Q(a) for all a e R. %3D

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Please prove the following with clear steps and/or related theorem.
Problem 3.
(i) Prove or disprove: if R is a commutative ring and P and Q are polyno-
mials in R[a], then P = Q if and only if P(a) = Q(a) for all a e R.
(ii) Prove or disprove: if R is a commutative ring and P E R[x] is a polynomial whose
coefficients are zero divisors in R, then P is a zero divisor in R[x].
(iii) (Bonus) Prove or disprove: if R is a commutative ring and P is a zero divisor in R[x],
then every coefficient in P is a zero divisor in R.
Transcribed Image Text:Please prove the following with clear steps and/or related theorem. Problem 3. (i) Prove or disprove: if R is a commutative ring and P and Q are polyno- mials in R[a], then P = Q if and only if P(a) = Q(a) for all a e R. (ii) Prove or disprove: if R is a commutative ring and P E R[x] is a polynomial whose coefficients are zero divisors in R, then P is a zero divisor in R[x]. (iii) (Bonus) Prove or disprove: if R is a commutative ring and P is a zero divisor in R[x], then every coefficient in P is a zero divisor in R.
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