Mathématiques

Question

BONJOUR
exercice: factoriser
E=4x²-(x-3)
F=-4x+4+x²
G=(5x+8)²-25
H=(2x-1)²-(2-3x)²
merci d'avance

2 Réponse

  • E=x(4x2-1)+3

    F= x(4+x)+4

    G = (5x+8)2-25

        = 5x2 +64-25

        = 5(x2-5)+64

    H= ( 2x-1)2 -(2-3)2

        = 2x2-1-4+9

        = 2x2-5+9

        =2x2 +4



  • Bonsoir

    E = 4 x² - ( x -3)²
    E = ( 4 x + x - 3) ( 4 x - x + 3)
    E = ( 5 x - 3) ( 3 x + 3)

    F = - 4 x + 4 + x²
    F = ( x - 2 )²

    G = ( 5 x + 8)² - 25
    G = ( 5 x + 8 + 5) ( 5 x + 8 - 5)
    G =  ( 5 x + 13 ) ( 5 x + 3)

    H = ( 2 x - 1)² -  ( 2 - 3 x)²
    H = ( 2 x - 1 + 2 - 3 x ) ( 2 x - 1 - 2 + 3 x)
    H = ( - x + 1) ( 5 x - 3)

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