Mathématiques

Question

hello..reduire les expressions...D=2x²+6x+x²-3x-x²+3x-2x-6x...................E=9-x²+3x²-9x+7+5x^3-7x^3......................F=2x^3+4-6x²+x²-2x+9x-3x-9x.merci

2 Réponse

  • D = 2x² + 6x + x² - 3x - x² + 3x - 2x - 6x
    D = 2x
    ² + x² - x² + 6x - 6x - 3x + 3x - 2x
    D = 2x² - 2x

    E = 9 - x² + 3x² - 9x + 7 + 5x
    ³ - 7x³
    E = 5x³ - 7x³ - x² + 3x² - 9x + 7 + 9
    E = -2x³ + 2x² - 9x + 16

    F = 2x
    ³ + 4 - 6x² + x² - 2x + 9x - 3x -9x
    F = 2x
    ³ - 6x² + x² - 2x + 9x - 9x - 3x + 4
    F = 2x³ - 5x² - 5x + 4
  • D = 2x²+6x+x²-3x-x²+3x-2x-6x
       = 2x²- 2x

    E= 9-x²+3x²-9x+7+5x^3-7x^3
       = -2x³ + 2x² - 9x + 16

    F=2x^3+4-6x²+x²-2x+9x-3x-9x
     = 2x³ - 5x² - 5x + 4

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