Solve Polynomial Inequality...1

Discussion in 'Other Pre-University Math' started by nycmathguy, Sep 30, 2021.

  1. nycmathguy

    nycmathguy

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    Section 2.7
    Question 16

    20210929_122809.jpg

    Solve for x.

    sqrt{x^2} = sqrt{25}

    x = -5 & x = 5

    See attachment.

    20210930_104549.jpg

    As you can see, the inequality is satisfied in the closed interval [-5, 5] including x = -5 & x = 5.

    You say?
     
    nycmathguy, Sep 30, 2021
    #1
  2. nycmathguy

    MathLover1

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    correct
    try to draw a number line this way
    [​IMG]
     
    MathLover1, Oct 1, 2021
    #2
    nycmathguy likes this.
  3. nycmathguy

    nycmathguy

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    I totally forgot to graph the solution. More Section 2.7 questions tomorrow. Check out three extra post in the Geometry and Trigonometry forum.
     
    nycmathguy, Oct 1, 2021
    #3
  4. nycmathguy

    nycmathguy

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    nycmathguy, Oct 1, 2021
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