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Sagot :

VINS

bonsoir

5 x ( 1 - 2 x ) = 0

soit  5 x = 0 et  x = 0

soit  1 - 2 x = 0 et x =  1/2

5 ( 2 x - 5 ) = 0

10 x - 25 = 0

10 x = 25

x = 2.5

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