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Mathematics

9th -

12thgrade

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Solving Quadratics by Square Roots

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10 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Solve:  x2=81\ x^2=81  

     {9}\left\{9\right\}  

     {±9i}\left\{\pm9i\right\}  

     {±9}\left\{\pm\sqrt{9}\right\}  

     {±9}\left\{\pm9\right\}  

  • 2. Multiple Choice
    30 seconds
    1 pt

    Solve: x2=16x^2=-16  

     {±4}\left\{\pm4\right\}  

     {0}\left\{0\right\}  

     {±4i}\left\{\pm4i\right\}  

     {4i}\left\{4i\right\}  

  • 3. Multiple Choice
    1 minute
    1 pt

    Solve: x2+7=23x^2+7=23  

     {±89}\left\{\pm\frac{8}{9}\right\}  

     {±4i}\left\{\pm4i\right\}  

     {±16}\left\{\pm16\right\}  

     {±4}\left\{\pm4\right\}  

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