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      <description>Risorse per risolvere un&#39;equazione di 2° grado</description>
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      <pubDate>2017-06-01 20:04:39 UTC</pubDate>
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         <title> videolezione 1</title>
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         <description><![CDATA[<div>Come si risolve un'equazione di secondo grado</div>]]></description>
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         <pubDate>2017-06-01 20:06:24 UTC</pubDate>
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         <title>Esercizi svolti </title>
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         <description><![CDATA[<div>equazioni di secondo grado complete; equazioni spurie di secondo grado; equazioni pure di secondo grado; equazioni con coefficienti razionali; equazioni con coefficienti irrazionali; esempio di equazione fratta di secondo grado</div>]]></description>
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         <pubDate>2017-06-01 20:09:34 UTC</pubDate>
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         <title>Un po&#39; di teoria</title>
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         <pubDate>2017-06-01 20:29:39 UTC</pubDate>
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         <title>Interpretazione geometrica </title>
         <author>matildevetrano4</author>
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         <pubDate>2017-06-01 20:43:00 UTC</pubDate>
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         <title>videolezione 2</title>
         <author>matildevetrano4</author>
         <link>https://padlet.com/matildevetrano4/t3jw3xly3vm5/wish/174885387</link>
         <description><![CDATA[<div>Interpretazione geometrica</div>]]></description>
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         <pubDate>2017-06-01 20:48:23 UTC</pubDate>
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         <title>Formula risolutiva e formula ridotta</title>
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         <pubDate>2017-06-01 20:51:35 UTC</pubDate>
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