Réponse :
A = x(x + 2) = x² + 2 x
B = x(x - 6) = x² - 6 x
C = 3 x(x + 5) = 3 x² + 15 x
F = 5 x(x - 1) = 5 x² - 5 x
G = 6 x(2 + 9 x) = 12 x + 54 x²
H = x(x² - 4) = x³ - 4 x
Explications étape par étape :
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Réponse :
A = x(x + 2) = x² + 2 x
B = x(x - 6) = x² - 6 x
C = 3 x(x + 5) = 3 x² + 15 x
F = 5 x(x - 1) = 5 x² - 5 x
G = 6 x(2 + 9 x) = 12 x + 54 x²
H = x(x² - 4) = x³ - 4 x
Explications étape par étape :