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
-$$c \equiv a ^ { 2 } - b ^ { 2 } ( \bmod 7 )$$

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The Answer of 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
-$$c \equiv a ^ { 2 } - b ^ { 2 } ( \bmod 7 )$$

Suppose That a and B Are Integers, a ≡ 4 c≡a2−b2( mod 7)c \equiv a ^ { 2 } - b ^ { 2 } ( \bmod 7 )c≡a2−b2(mod7)

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