5. (7 points)                        
(A+B)*(A+C)*(!B+!C)

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(A+B*C)*(!B+!C)

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(A+B*C)*(!B*!C)

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A*(!B*!C)+(B*C)*(!B*!C)

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A(!B*!C)+(0)  

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A(!B+!C)

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A*!(B+C)

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