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Sagot :

H = ( 11x - 3 ) ² + ( 11x - 3 ) ( 5 + 9x )

H = ( 11x - 3 ) ( 11x - 3 ) + ( 11x - 3 ) ( 5 + 9x )

H = ( 11x - 3 ) [ ( 11x - 3 ) + ( 5 + 9x ) ]

H = ( 11x - 3 ) [ 11x - 3 + 5 + 9x ]

H = ( 11x - 3 ) ( 20x + 2 )

comme ça ?

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