Resoudre les equations produits suivantes :
( x + 11 ) ( x - 3 ) = 0
( 5x - 25 ) ( 6x + 18) = 0
( x + 11 ) ( x - 3 ) = 0
( 5x - 25 ) ( 6x + 18) = 0
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Bonjour,
(x + 11)(x - 3) = 0
x + 11 = 0 x - 3 = 0
x = -11 x = 3
(5x - 25)(6x + 18) = 0
5x - 25 = 0 6x + 18 = 0
5x = 25 6x = -18
x = 25/5 x = -18/6
x = 5 x = -3