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Sagot :

VINS

Bonsoir

E =  16 x² + 40 x + 25 -  ( 9 x² - 12 x + 4 )

E =  16 x² + 40 x + 25 - 9 x² + 12 x - 4

E =  7 x² + 52 x + 21

E = ( 4 x + 5 + 3 x - 2 ) ( 4 x + 5 - 3 x + 2 )

E = ( 7 x + 3 ) ( x + 7 )

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