Simplifying Rational Expressions...3

Discussion in 'Other Pre-University Math' started by nycmathguy, Sep 13, 2021.

  1. nycmathguy

    nycmathguy

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    Section 2.3
    Question 80

    See attachment.

    20210912_193828.jpg
     
    nycmathguy, Sep 13, 2021
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  2. nycmathguy

    MathLover1

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    you made mistake while subtracting -5x^2 -(-4x^2)=-x^2 and because of that entire result is wrong

    .............(x^2+ 9 x-1
    (x^2-4)| (x^4+9x^3-5x^2-36x+4)
    ..............x^4+0*x^3-4x^2
    ........................9x^3-x^2 -36x
    ........................9x^3+0*x^2 -36x
    .................................-x^2 +0............bring down 4
    .................................-x^2 +4
    .................................-x^2 +4
    ...........................................0


    x^4 + 9x^3 - 5x^2 - 36x + 4 = (x^2 + 9x - 1)*(x^2 - 4) + 0
     
    MathLover1, Sep 13, 2021
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  3. nycmathguy

    nycmathguy

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    I made a subtraction error. It happens to everyone.
     
    nycmathguy, Sep 13, 2021
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    MathLover1 likes this.
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