Réponses

2014-02-13T17:56:48+01:00
a) x² = 0,49
x = √0,49

b) x² = 17
x = √17

c) x² = 4/9
x = √4/9
x = 2/3

d) x² - 100 = 0
x² = 100
x = √100
x = 10

e) 4x² = 36

x² = 36/4
x = √36/4
x = 6/2
x = 3