Réponse:
5(a + 9) = 5a + 45
2(a - 4) = 2a - 8
3(10 + b) = 30 + 3b
5(6 - b) = 30 - 5b
3(a + 5) = 3a + 15
x(x - 4) = x^2 - 4x
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Réponse:
5(a + 9) = 5a + 45
2(a - 4) = 2a - 8
3(10 + b) = 30 + 3b
5(6 - b) = 30 - 5b
3(a + 5) = 3a + 15
x(x - 4) = x^2 - 4x