Harriot, Thomas, Mss. 6782

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              <s xml:space="preserve">[
                <emph style="bf">Commentary:</emph>
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              <s xml:space="preserve"> An examination of the equation
                <math>
                  <mstyle>
                    <mi>a</mi>
                    <mi>a</mi>
                    <mi>a</mi>
                    <mo>-</mo>
                    <mn>6</mn>
                    <mi>a</mi>
                    <mi>a</mi>
                    <mo>+</mo>
                    <mn>1</mn>
                    <mn>1</mn>
                    <mi>a</mi>
                    <mo>=</mo>
                    <mn>6</mn>
                  </mstyle>
                </math>
              , which has roots 1, 2, 3. This is one of several equations with multiple roots treated by Viète in
                <emph style="it">De numerosa potestatum resolutione</emph>
                <ref id="viete_1600b"> (Viète </ref>
              . Harriot solved it in full on Add MS 6783
                <ref target="http://echo.mpiwg-berlin.mpg.de/ECHOdocuView?url=/permanent/library/VWXURW4V&start=370&viewMode=image&pn=373"> f. </ref>
              , and referred to it again in Add MS 6783
                <ref target="http://echo.mpiwg-berlin.mpg.de/ECHOdocuView?url=/permanent/library/VWXURW4V&start=370&viewMode=image&pn=375"> f. </ref>
              . </s>
              <s xml:space="preserve">]</s>
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