bonsoir
a) faux
9 + 3 = 12
√9 + √3 ≠ 12
b ) √2 x √ 50 = √ 100
√100 = 10 et 2 * 50 = 100 vrai
c) vrai ( √3 )² = 3
d) 81 /9 = 9 et √9 = 3
√81 / √9 = √81/9 = √9 = 3
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bonsoir
a) faux
9 + 3 = 12
√9 + √3 ≠ 12
b ) √2 x √ 50 = √ 100
√100 = 10 et 2 * 50 = 100 vrai
c) vrai ( √3 )² = 3
d) 81 /9 = 9 et √9 = 3
√81 / √9 = √81/9 = √9 = 3