For all integers a, b, c, d, determine whether each of the following is TRUE or FALSE, Justify your answer:

a)If a|c and b|c, then (ab)|c2.
b)If a|b and c|d, then (ac)|(b + d).
c)If a|b, b|c and c|d, then a|d.
d)If a|b and c|d, then (a+c)|(b+d).

2 answers

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Lol! I was in a hurry that's why wrote that xD