Chapter 4: 9 (page 94)
If is a zero divisor in a commutative ring R , then c is also a zero divisor in R[x].
Short Answer
It is proved that c is a zero divisor in R[x].
Chapter 4: 9 (page 94)
If is a zero divisor in a commutative ring R , then c is also a zero divisor in R[x].
It is proved that c is a zero divisor in R[x].
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Get started for freeShow that is irrational for every positive prime integer p. [Hint: What are the roots of ? Do you prefer this proof to the one in Exercises 30 and 31 of Section 1.37].
if is a factor of .
Prove that every non constant can be written in the form , with and each monic irreducible in . Show further that if with and each monic irreducible in , then , and after reordering and relabelling if necessary, for each .
Give an example of a polynomial in that is irreducible in but factors when reduced mod 2,3,4 and 5.
Show that is irreducible in .
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