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Sagot :

Bonjour,
(3x+6)2 + ( 4 x 8)2= ( 5 x + 10)2
9x2 + 36 x + 36+ 16x2+64x+ 64= 25x2+ 100x+ 100
25x2+ 100x+100=25x2 + 100x +100

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