Suppose That a and B Are Integers $$a \equiv 4 ( \bmod 7 ) , \text { and } b \equiv 6 ( \bmod 7 ) . \text { Find the integer } c \text { with } 0 \leq c \leq 6$$

question 75

Short Answer

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

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