31 pages 39 trans math 5ème pouvez vous m’aidez svp

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Pour x = 5

C = 3(5+2) = 15+ 6 = 21

D = 2 +5(5) = 2 + 25 = 27

Pour x = 1,5

C = 3(1,5+ 2) = 4,5 + 6 = 10,5

D = 2 + 5(1,5) = 2 + 7,5 = 9,5

Pour x = 8

C = 3(8 +2) = 3(10) = 30

D = 2 + 5(8) = 2 + 40 = 42

Pour x = 0

C = 3(0+ 2) = 3(2) = 6

D = 2 + 5(0) = 2 + 0. = 2