Mathématiques

Question

bonsoir je dois factoriser les expressions suivantes merci de m'aider A= x(x+2)+3x B=x²-5x C=(x+2)(x+1)-2(x+1) D=(x+3)(x-2)-(x-2)(2x+1)

2 Réponse

  • Bonjour

    A = x (x+2+3) = x (x+5)

    B = x (x-5)

    C = (x+1)(x+2-2) = x (x+1)

    D =(x-2)(x+3-2x-1)

    = (x-2)(-x+2)

    = -(x-2)(x-2)

    = -(x-2)^2

  • Bonsoir

    Factoriser :

    A= x(x+2)+3x

    A = x(x + 2 + 3)

    A = x(x + 5)


    B=x²-5x

    B = x(x - 5)


    C=(x+2)(x+1)-2(x+1)

    C = (x + 1)(x + 2 - 2)

    C = (x + 1) * x

    C = x(x + 1)


    D=(x+3)(x-2)-(x-2)(2x+1)

    D = (x - 2)(x + 3 - 2x - 1)

    D = (x - 2)(-x + 2)

    D = (x - 2) * -1(x - 2)

    D = -(x - 2)(x - 2)

    D = -(x - 2)²

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