Suppose That a and B Are Integers, a ≡ 4 $$c \equiv a ^ { 2 } - b ^ { 2 } ( \bmod 7 )$$

Short Answer

suppose that a and b are integers, a ≡ 4 (mod 7), and b ≡ 6 (mod 7). Find the integer c with 0 ≤ c ≤ 6
such that
- $$c \equiv a ^ { 2 } - b ^ { 2 } ( \bmod 7 )$$