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c-4,7
d-2,6,1
b) a-4,1
b- 6
c- 2
d- 9,5
a 2 4 0
b 3 5 1
c 4 6 2
d 2√10 4√10 √10
B)
a 2 3 3
b 4 5 5
c 2 3 3
d 3 4 4