Anonymous
Anonymous asked in Science & MathematicsMathematics · 8 months ago

help with this math problem!?

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4 Answers

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  • 8 months ago

    D. x^2+3x+5  (x not 2)

  • 8 months ago

    x³ + x² - x - ...

    = x³ - 2x² + 3x² - 6x + 5x ...

    = (x-2)x² + (x-2)3x + 5x ...

    = (x-2)(x²+3x) + 5x ...

    The only answer starting with x²+3x is D. If one answer is correct it must be this one.

  • (x - 2) * (ax^2 + bx + c + d/(x - 2)) = x^3 + x^2 - x - 10

    ax^3 + bx^2 + cx - 2ax^2 - 2bx - 2c + d = x^3 + x^2 - x - 10

    ax^3 + (b - 2a) * x^2 + (c - 2b) * x + (d - 2c) = x^3 + x^2 - x - 10

    ax^3 = x^3

    a = 1

    (b - 2a) * x^2 = x^2

    b - 2a = 1

    b - 2 = 1

    b = 3

    (c - 2b) * x = -x

    c - 2b = -1

    c - 6 = -1

    c = 5

    d - 2c = -10

    d - 10 = -10

    d = 0

    (x - 2) * (x^2 + 3x + 5)

  • 8 months ago

    ...............x^2 +3x + 5

    ......----------------------

    x-2|x^3 + x^2 - x - 10

    ......x^3 - 2x^2

    ......-------------

    ..............3x^2- x

    ..............3x^2-6x

    ..............---------

    ......................5x - 10

    ......................5x - 10

    ......................---------

    ..............................0

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