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Sagot :

G = 13 * 7 + 3 * 13

   = 13 * ( 7 + 3 )

H = 9x^3 - 3x²

   = x²( 9x - 3 )

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

   = ( 2x - 5 )( - 3x + 4 ) - ( 2x - 5 )( 2x - 5 )     ( 2x - 5 ) est un facteur commun

   = ( 2x - 5 )( - 3x + 4 - 2x + 5 )

   = ( 2x - 5 )( -5x + 9 )

MAUDMARINE

Bonjour,

G = 13 * 7 + 3 * 13

G = 13 (7 + 3)

H = 9x³ - 3x²

H = 3x² (3x - 1)

I = (2x - 5) (- 3x + 4) - (2x - 5)²

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

I = (2x - 5) [(- 3x + 4) - (2x - 5)]

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

I = (2x - 5) (- 5x + 9)

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