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	<id>https://wiki.universitas.ro/index.php?action=history&amp;feed=atom&amp;title=E%3A16901</id>
	<title>E:16901 - Revision history</title>
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	<updated>2026-06-17T01:34:52Z</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:16901&amp;diff=10716&amp;oldid=prev</id>
		<title>Andrei.Horvat: Created page with &quot;&#039;&#039;&#039;E:16901 (Călin Hossu)&#039;&#039;&#039;  &#039;&#039;Determinați numărul natural pentru care are loc egalitatea &lt;math&gt;x\sqrt{x} + x^2 = 30758&lt;/math&gt;.&#039;&#039;  &#039;&#039;&#039;Soluție&#039;&#039;&#039;  Dacă &lt;math&gt;\sqrt{x}=a&lt;/math&gt;, atunci ecuația devine &lt;math display=&quot;block&quot;&gt;a^2\cdot a + \left(a^2\right)^2=30758,&lt;/math&gt;ceea ce este echivalent cu &lt;math display=&quot;block&quot;&gt;a^3\left(a+1\right) = 30758 = 13^3\cdot 14.&lt;/math&gt;Deci &lt;math&gt; a= 13&lt;/math&gt;, cea ce implică &lt;math&gt;x=169&lt;/math&gt;.&quot;</title>
		<link rel="alternate" type="text/html" href="https://wiki.universitas.ro/index.php?title=E:16901&amp;diff=10716&amp;oldid=prev"/>
		<updated>2025-08-20T15:30:23Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;&amp;#039;&amp;#039;&amp;#039;&lt;a href=&quot;/wiki/E:16901&quot; title=&quot;E:16901&quot;&gt;E:16901&lt;/a&gt; (Călin Hossu)&amp;#039;&amp;#039;&amp;#039;  &amp;#039;&amp;#039;Determinați numărul natural pentru care are loc egalitatea &amp;lt;math&amp;gt;x\sqrt{x} + x^2 = 30758&amp;lt;/math&amp;gt;.&amp;#039;&amp;#039;  &amp;#039;&amp;#039;&amp;#039;Soluție&amp;#039;&amp;#039;&amp;#039;  Dacă &amp;lt;math&amp;gt;\sqrt{x}=a&amp;lt;/math&amp;gt;, atunci ecuația devine &amp;lt;math display=&amp;quot;block&amp;quot;&amp;gt;a^2\cdot a + \left(a^2\right)^2=30758,&amp;lt;/math&amp;gt;ceea ce este echivalent cu &amp;lt;math display=&amp;quot;block&amp;quot;&amp;gt;a^3\left(a+1\right) = 30758 = 13^3\cdot 14.&amp;lt;/math&amp;gt;Deci &amp;lt;math&amp;gt; a= 13&amp;lt;/math&amp;gt;, cea ce implică &amp;lt;math&amp;gt;x=169&amp;lt;/math&amp;gt;.&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:16901]] (Călin Hossu)&amp;#039;&amp;#039;&amp;#039;&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;Determinați numărul natural pentru care are loc egalitatea &amp;lt;math&amp;gt;x\sqrt{x} + x^2 = 30758&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;
Dacă &amp;lt;math&amp;gt;\sqrt{x}=a&amp;lt;/math&amp;gt;, atunci ecuația devine &amp;lt;math display=&amp;quot;block&amp;quot;&amp;gt;a^2\cdot a + \left(a^2\right)^2=30758,&amp;lt;/math&amp;gt;ceea ce este echivalent cu &amp;lt;math display=&amp;quot;block&amp;quot;&amp;gt;a^3\left(a+1\right) = 30758 = 13^3\cdot 14.&amp;lt;/math&amp;gt;Deci &amp;lt;math&amp;gt; a= 13&amp;lt;/math&amp;gt;, cea ce implică &amp;lt;math&amp;gt;x=169&amp;lt;/math&amp;gt;.&lt;/div&gt;</summary>
		<author><name>Andrei.Horvat</name></author>
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