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	<id>https://wiki.universitas.ro/index.php?action=history&amp;feed=atom&amp;title=E%3A15651</id>
	<title>E:15651 - Revision history</title>
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	<updated>2026-05-01T16:04:18Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://wiki.universitas.ro/index.php?title=E:15651&amp;diff=10549&amp;oldid=prev</id>
		<title>Andrei.Horvat at 07:42, 9 January 2025</title>
		<link rel="alternate" type="text/html" href="https://wiki.universitas.ro/index.php?title=E:15651&amp;diff=10549&amp;oldid=prev"/>
		<updated>2025-01-09T07:42:41Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 07:42, 9 January 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l7&quot;&gt;Line 7:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 7:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ecuația se scrie &amp;lt;math&amp;gt;x\left(x^{2019} - x - 3 \right) = 0&amp;lt;/math&amp;gt;, de unde &amp;lt;math&amp;gt;x=0&amp;lt;/math&amp;gt; sau &amp;lt;math&amp;gt;x^{2019} - x - 3 = 0&amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ecuația se scrie &amp;lt;math&amp;gt;x\left(x^{2019} - x - 3 \right) = 0&amp;lt;/math&amp;gt;, de unde &amp;lt;math&amp;gt;x=0&amp;lt;/math&amp;gt; sau &amp;lt;math&amp;gt;x^{2019} - x - 3 = 0&amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Vom demonstra arăta că ecuația &amp;lt;math&amp;gt;x^{2019} - x - 3 = 0&amp;lt;/math&amp;gt; nu are soluții raționale. Presupunem că există o soluție rațională &amp;lt;math&amp;gt;\frac{p}{q}&amp;lt;/math&amp;gt;, cu &amp;lt;math&amp;gt;p&amp;lt;/math&amp;gt; și &amp;lt;math&amp;gt;q&amp;lt;/math&amp;gt; numere întregi, prime între ele. Atunci &amp;lt;math&amp;gt;\frac{p^{2019}}{q^{2019}} - \frac{p}{q} -3 = 0&amp;lt;/math&amp;gt;, ceea ce revine la &amp;lt;math&amp;gt;p^{2019} - p \cdot q^{2018} - 3\cdot q^{2019} = 0&amp;lt;/math&amp;gt;. Cum &amp;lt;math&amp;gt;q | p\cdot q^{2018}&amp;lt;/math&amp;gt; și &amp;lt;math&amp;gt;q | q^{2019}&amp;lt;/math&amp;gt;, rezultă că &amp;lt;math&amp;gt;q | p^{2019}&amp;lt;/math&amp;gt;, ceea ce este în contradicție cu &amp;lt;math&amp;gt; \left(p,q\right) = 1&amp;lt;/math&amp;gt;. Deci, ecuația &amp;lt;math&amp;gt;x^{2019} - x - 3 = 0&amp;lt;/math&amp;gt; nu are soluții raționale.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Vom demonstra arăta că ecuația &amp;lt;math&amp;gt;x^{2019} - x - 3 = 0&amp;lt;/math&amp;gt; nu are soluții raționale. Presupunem că există o soluție rațională &amp;lt;math&amp;gt;\frac{p}{q}&amp;lt;/math&amp;gt;, cu &amp;lt;math&amp;gt;p&amp;lt;/math&amp;gt; și &amp;lt;math&amp;gt;q&amp;lt;/math&amp;gt; numere întregi, prime între ele. Atunci &amp;lt;math&amp;gt;\frac{p^{2019}}{q^{2019}} - \frac{p}{q} -3 = 0&amp;lt;/math&amp;gt;, ceea ce revine la &amp;lt;math&amp;gt;p^{2019} - p \cdot q^{2018} - 3\cdot q^{2019} = 0&amp;lt;/math&amp;gt;. Cum &amp;lt;math&amp;gt;q | p\cdot q^{2018}&amp;lt;/math&amp;gt; și &amp;lt;math&amp;gt;q | &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;3\cdot &lt;/ins&gt;q^{2019}&amp;lt;/math&amp;gt;, rezultă că &amp;lt;math&amp;gt;q | p^{2019}&amp;lt;/math&amp;gt;, ceea ce este în contradicție cu &amp;lt;math&amp;gt; \left(p,q\right) = 1&amp;lt;/math&amp;gt;. Deci, ecuația &amp;lt;math&amp;gt;x^{2019} - x - 3 = 0&amp;lt;/math&amp;gt; nu are soluții raționale.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;În concluzie, singura soluție rațională a ecuației &amp;lt;math&amp;gt;x^{2020} - x^2 - 3x = 0&amp;lt;/math&amp;gt; este &amp;lt;math&amp;gt;x = 0&amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;În concluzie, singura soluție rațională a ecuației &amp;lt;math&amp;gt;x^{2020} - x^2 - 3x = 0&amp;lt;/math&amp;gt; este &amp;lt;math&amp;gt;x = 0&amp;lt;/math&amp;gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Andrei.Horvat</name></author>
	</entry>
	<entry>
		<id>https://wiki.universitas.ro/index.php?title=E:15651&amp;diff=10548&amp;oldid=prev</id>
		<title>Andrei.Horvat: Created page with &quot;&#039;&#039;&#039; E:15651 (Mihai Pălincaș, elev)&#039;&#039;&#039;  &#039;&#039;Determinați soluțiile raționale ale ecuației &lt;math&gt;x^{2020} - x^2 - 3x = 0&lt;/math&gt;.&#039;&#039;  &#039;&#039;&#039;Soluție&#039;&#039;&#039;  Ecuația se scrie &lt;math&gt;x\left(x^{2019} - x - 3 \right) = 0&lt;/math&gt;, de unde &lt;math&gt;x=0&lt;/math&gt; sau &lt;math&gt;x^{2019} - x - 3 = 0&lt;/math&gt;.  Vom demonstra arăta că ecuația &lt;math&gt;x^{2019} - x - 3 = 0&lt;/math&gt; nu are soluții raționale. Presupunem că există o soluție rațională &lt;math&gt;\frac{p}{q}&lt;/math&gt;, cu &lt;math&gt;p&lt;/math&gt; și &lt;ma...&quot;</title>
		<link rel="alternate" type="text/html" href="https://wiki.universitas.ro/index.php?title=E:15651&amp;diff=10548&amp;oldid=prev"/>
		<updated>2025-01-09T07:41:57Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;&amp;#039;&amp;#039;&amp;#039; E:15651 (Mihai Pălincaș, elev)&amp;#039;&amp;#039;&amp;#039;  &amp;#039;&amp;#039;Determinați soluțiile raționale ale ecuației &amp;lt;math&amp;gt;x^{2020} - x^2 - 3x = 0&amp;lt;/math&amp;gt;.&amp;#039;&amp;#039;  &amp;#039;&amp;#039;&amp;#039;Soluție&amp;#039;&amp;#039;&amp;#039;  Ecuația se scrie &amp;lt;math&amp;gt;x\left(x^{2019} - x - 3 \right) = 0&amp;lt;/math&amp;gt;, de unde &amp;lt;math&amp;gt;x=0&amp;lt;/math&amp;gt; sau &amp;lt;math&amp;gt;x^{2019} - x - 3 = 0&amp;lt;/math&amp;gt;.  Vom demonstra arăta că ecuația &amp;lt;math&amp;gt;x^{2019} - x - 3 = 0&amp;lt;/math&amp;gt; nu are soluții raționale. Presupunem că există o soluție rațională &amp;lt;math&amp;gt;\frac{p}{q}&amp;lt;/math&amp;gt;, cu &amp;lt;math&amp;gt;p&amp;lt;/math&amp;gt; și &amp;lt;ma...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039; E:15651 (Mihai Pălincaș, elev)&amp;#039;&amp;#039;&amp;#039;&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;Determinați soluțiile raționale ale ecuației &amp;lt;math&amp;gt;x^{2020} - x^2 - 3x = 0&amp;lt;/math&amp;gt;.&amp;#039;&amp;#039;&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;Soluție&amp;#039;&amp;#039;&amp;#039;&lt;br /&gt;
&lt;br /&gt;
Ecuația se scrie &amp;lt;math&amp;gt;x\left(x^{2019} - x - 3 \right) = 0&amp;lt;/math&amp;gt;, de unde &amp;lt;math&amp;gt;x=0&amp;lt;/math&amp;gt; sau &amp;lt;math&amp;gt;x^{2019} - x - 3 = 0&amp;lt;/math&amp;gt;.&lt;br /&gt;
&lt;br /&gt;
Vom demonstra arăta că ecuația &amp;lt;math&amp;gt;x^{2019} - x - 3 = 0&amp;lt;/math&amp;gt; nu are soluții raționale. Presupunem că există o soluție rațională &amp;lt;math&amp;gt;\frac{p}{q}&amp;lt;/math&amp;gt;, cu &amp;lt;math&amp;gt;p&amp;lt;/math&amp;gt; și &amp;lt;math&amp;gt;q&amp;lt;/math&amp;gt; numere întregi, prime între ele. Atunci &amp;lt;math&amp;gt;\frac{p^{2019}}{q^{2019}} - \frac{p}{q} -3 = 0&amp;lt;/math&amp;gt;, ceea ce revine la &amp;lt;math&amp;gt;p^{2019} - p \cdot q^{2018} - 3\cdot q^{2019} = 0&amp;lt;/math&amp;gt;. Cum &amp;lt;math&amp;gt;q | p\cdot q^{2018}&amp;lt;/math&amp;gt; și &amp;lt;math&amp;gt;q | q^{2019}&amp;lt;/math&amp;gt;, rezultă că &amp;lt;math&amp;gt;q | p^{2019}&amp;lt;/math&amp;gt;, ceea ce este în contradicție cu &amp;lt;math&amp;gt; \left(p,q\right) = 1&amp;lt;/math&amp;gt;. Deci, ecuația &amp;lt;math&amp;gt;x^{2019} - x - 3 = 0&amp;lt;/math&amp;gt; nu are soluții raționale.&lt;br /&gt;
&lt;br /&gt;
În concluzie, singura soluție rațională a ecuației &amp;lt;math&amp;gt;x^{2020} - x^2 - 3x = 0&amp;lt;/math&amp;gt; este &amp;lt;math&amp;gt;x = 0&amp;lt;/math&amp;gt;.&lt;/div&gt;</summary>
		<author><name>Andrei.Horvat</name></author>
	</entry>
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