Bonjour,
9. Développer chaque expression littérale :
Simple distributivité : K(A + B) = KA + KB
I = 5(x + 2)
I = 5 × x + 5 × 2
I = 5x + 10
J = 11(t - 3)
J = 11 × t - 11 × 3
J = 11t - 33
K = 3(2z + 10)
K = 3 × 2z + 3 × 10
K = 6z + 30
L = a(a + 7)
L = a × a + a × 7
L = a² + 7a
Bonne journée.
