An element of a commutative ring R(1≠0) is nilpotent if __________
A. a+1=0
B. an= 0, for some positive integer n
C. an= 1, for some integer n
D. a2 = 0
Answer:B
An element of a commutative ring R(1≠0) is nilpotent if __________
A. a+1=0 B. an= 0, for some positive integer n C. an= 1, for some integer n D. a2 = 0