Réponse :
Explications étape par étape
bonjour,
x = 1.4 * 1.2 / 9
x = 1.68/9
x ≈ 0.187
x = 2.5 * 0.14 / 0.49
x ≈ 0.714
x = 2.7 * 14 / 6.6
x ≈ 5.727
x/10 = 10/x
x² = 100
x² - 100 = 0
x² - 10² = 0
(x - 10)(x + 10) = 0
x - 10 = 0 ou x + 10 = 0
x = 10 ou x = -10
x / 0.35 = 5.2
x = 5.2 * 0.35
x = 1.82
0.26 / x = 5.2
x = 0.26/5.2
x = 0.05
