Bonjour,
Schéma en PJ
L(x) = 4 × 9 + 4 × (x + 2) + 4 × (x + 3)
L(x) = 4 (9 + x + 2 + x + 3)
L(x) = 4 (2x + 14)
L(x) = 8x + 96
A(x) = 2 × [9 (x + 2) + 9 (x + 3) + (x + 2) (x + 3)]
A(x) = 2 × [9 x + 18 + 9x + 27 + x² + 5x + 6]
A(x) = 2 × [x² + 14x + 51]
A(x) = 2x² + 28x + 102
V(x) = 9 (x + 2) (x + 3)
V(x) = 9x² + 45x + 54
