Let a, b Z. Prove that if a2 + 2b2 0 (mod 3), then either a and b are both congruent to
Chapter 4, Problem 4.16(choose chapter or problem)
Let a, b Z. Prove that if a2 + 2b2 0 (mod 3), then either a and b are both congruent to 0 modulo 3 orneither is congruent to 0 modulo 3.
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