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    Quadratic Formula

    Module 4 Day 12 Your Turn Part 4
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    • divinedolphinD
      divinedolphin M0★ M1★ M2★ M3★ M4★ M5★ M6★
      last edited by

      Since \(z=\pm\frac{\sqrt{b^2-4ac}}{2a}\), would that make \(r=-\frac{b}{2a}-\pm\frac{\sqrt{b^2-4ac}}{2a}\)?

      👕👕👕👕👕👕👕👕👕👕🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌

      debbieD 1 Reply Last reply Reply Quote 2
      • debbieD
        debbie ADMIN M0★ M1 M5 @divinedolphin
        last edited by

        @divinedolphin Yes! That's essentially the same thing as the quadratic formula. The only tiny difference is the "\(\textcolor{red}{- \pm } \)" which simplifies to the normal "\(\textcolor{red}{\pm}.\)

        \(r=-\frac{b}{2a}\textcolor{red}{-\pm}\frac{\sqrt{b^2-4ac}}{2a}\)

        ⬆
        same as

        \(r=-\frac{b}{2a}\textcolor{red}{\pm}\frac{\sqrt{b^2-4ac}}{2a}\)

        🙂

        T 1 Reply Last reply Reply Quote 3
        • T
          tidyboar M2 M3★ M5 M6 @debbie
          last edited by tidyboar

          (Latex didn't work so here's a picture:)e3d7abae-c9e7-497e-a8ac-2fbcb1d69fb7-image.png

          debbieD 1 Reply Last reply Reply Quote 3
          • debbieD
            debbie ADMIN M0★ M1 M5 @tidyboar
            last edited by

            @tidyboar
            By the way, here is the code for the quadratic formula above 🙂

            \\(r=-\frac{b}{2a}\textcolor{red}{-\pm}\frac{\sqrt{b^2-4ac}}{2a}\\)
            
            

            \(r=-\frac{b}{2a}\textcolor{red}{-\pm}\frac{\sqrt{b^2-4ac}}{2a}\)

            1 Reply Last reply Reply Quote 2

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