Bonjour,
D'après le théorème de Pythagore :
(x + 3)² = x² + 6²
x² + 6x + 9 = x² + 36
6x + 9 = 36
6x = 36 - 9
6x = 27
x = 27/6 = (3 × 9)/(3 × 2) = 9/2 = 4,5
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Bonjour,
D'après le théorème de Pythagore :
(x + 3)² = x² + 6²
x² + 6x + 9 = x² + 36
6x + 9 = 36
6x = 36 - 9
6x = 27
x = 27/6 = (3 × 9)/(3 × 2) = 9/2 = 4,5