Lösung der quadratischen Gleichung <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle x^{2}+10x=39}"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><msup><mi>x</mi><mrow class="MJX-TeXAtom-ORD"><mn>2</mn></mrow></msup><mo>+</mo><mn>10</mn><mi>x</mi><mo>=</mo><mn>39</mn></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle x^{2}+10x=39}</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/ab2d1fe59c70089e1a08ffca8c0a498f2f2afe22" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.505ex; width:14.302ex; height:2.843ex;" alt="{\displaystyle x^{2}+10x=39}"></span> nach Euklid
D. Herrmann
<a href="https://de.wikipedia.org/wiki/Benutzer:Kaeptnblaub%C3%A4r" class="extiw" title="de:Benutzer:Kaeptnblaubär">Kaeptnblaubär</a> 22:02, 2. Nov. 2008 (CET)++