Bonjour,
1) t = -2
A = 5t - 3
A = 5 × (-2) - 3
A = -10 - 3 = -13
2) x = -1 et y = 4
B = xy + 6x
B = (-1) × 4 + 6 × (-1)
B = -4 - 6 = -10
3) a = 6
C = 3(4 - 2a)
C = 3(4 - 2 × 6)
C = 3(4 - 12) = 3 × (-8) = -24
Bonne journée !
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Bonjour,
1) t = -2
A = 5t - 3
A = 5 × (-2) - 3
A = -10 - 3 = -13
2) x = -1 et y = 4
B = xy + 6x
B = (-1) × 4 + 6 × (-1)
B = -4 - 6 = -10
3) a = 6
C = 3(4 - 2a)
C = 3(4 - 2 × 6)
C = 3(4 - 12) = 3 × (-8) = -24
Bonne journée !