Mathématiques

Question

(Calculer.)
1. f(x)=(-2x+3)+(2 – 3x)
2. f(x)=(-2x+3) – (2 – 3x)
3. f(x)=(-2x+3)(2 – 3x)
4. f(x) = 3x(–2x+3) – 2x(2 – 3x)
Merci de m’aider svp

1 Réponse

  • Bonsoir

    Calculer.)

    1. f(x)=(-2x+3)+(2 – 3x)

    = -2x + 3 + 2 - 3x

    = -5x + 5

    2. f(x)=(-2x+3) – (2 – 3x)

    = -2x + 3 - 2 + 3x

    = x + 1

    3. f(x)=(-2x+3)(2 – 3x)

    = -2x * 2 - 2x * (-3x) + 3 * 2 + 3 * (-3x)

    = -4x + 6x^2 + 6 - 9x

    = 6x^2 - 13x + 6

    4. f(x) = 3x(–2x+3) – 2x(2 – 3x)

    = 3x * (-2x) + 3x * 3 - 2x * 2 - 2x * (-3x)

    = -6x^2 + 9x - 4x + 6x^2

    = 5x

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