Let p be a odd prime number and b, c € Z. Assume that there exists l e Z, such that l² = b² – 4c mod p. Show that then there is k E Z with k² + b•k +c = 0 mod p.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.5: Congruence Of Integers
Problem 37E
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Let p be a odd prime number and b, c e Z. Assume that there exists l E Z,
such that l2 = b² – 4c mod p. Show that then there is k e Z with
k² + b ·k + c = 0 mod p.
Transcribed Image Text:Let p be a odd prime number and b, c e Z. Assume that there exists l E Z, such that l2 = b² – 4c mod p. Show that then there is k e Z with k² + b ·k + c = 0 mod p.
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