Bonsoir
1a)
AB = 6
BC = 8
AC = 10
1b)
10² = 6²+8² =
100
36 + 64 = 100
100 = 100
Il est rectangle
2)
(5x+10)² = (3x+6) ² + (4x+8) ²
25x² +100x +100 = 9x² +36x +36 + 16x² +64x +64
25x² +100x +100 = 25x² + 100x + 100
Donc oui
