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      <title>My sweet padlet by Do Thai Hoang (FPL TN)</title>
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      <description>Made with wonder</description>
      <language>en-us</language>
      <pubDate>2021-11-27 01:39:52 UTC</pubDate>
      <lastBuildDate>2023-02-18 03:08:04 UTC</lastBuildDate>
      <webMaster>hello@padlet.com</webMaster>
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         <title></title>
         <author>tranvdbtk00049</author>
         <link>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1914987960</link>
         <description><![CDATA[<div><strong>1. Phép cộng hai số phức<br></strong><br></div><div>&nbsp; &nbsp; cho hai số phức z = a + bi và z' = a' + b'i<br><br></div><div>&nbsp; &nbsp; z + z' = (a + a') + (b + b')i<br><br></div><div>Tính chất:<br><br></div><div>&nbsp; &nbsp; - Kết hơp: (z + z') + z'' = z + (z' + z'')<br><br></div><div>&nbsp; &nbsp; - Giao hoán: z + z' = z' + z<br><br></div><div>&nbsp; &nbsp; - Số đối của z = a + bi là số -z = -a -bi</div>]]></description>
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         <pubDate>2021-11-27 01:40:21 UTC</pubDate>
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         <title></title>
         <author>kietnttk00057</author>
         <link>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1914988042</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-11-27 01:40:28 UTC</pubDate>
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         <title></title>
         <author>tranvdbtk00049</author>
         <link>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1914988280</link>
         <description><![CDATA[<div><strong>2. Phép trừ hai số phức<br></strong><br></div><div>&nbsp; cho hai số phức z = a + bi và z' = a' + b'i<br><br></div><div>&nbsp; &nbsp; z - z' = (a - a') + (b - b')i</div>]]></description>
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         <pubDate>2021-11-27 01:40:48 UTC</pubDate>
         <guid>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1914988280</guid>
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         <title></title>
         <author>tranvdbtk00049</author>
         <link>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1914989091</link>
         <description><![CDATA[<div><strong>3. Phép nhân hai số phức<br></strong><br></div><div>&nbsp; &nbsp;Cho z = a + bi và z' = a' + b'i, lấy tích của hai số và chú ý i<sup>2</sup> = -1 ta có:<br><br></div><div>&nbsp; &nbsp; z . z' = (a + bi)(a' + b'i) = aa' + ab'i + a'bi + bb'i<sup>2</sup> = aa' + ab'i + a'bi + bb'(-1) = aa' - bb' + (ab' + a'b)i<br><br></div><div>&nbsp; Tính chất:<br><br></div><div>&nbsp; &nbsp; &nbsp;- với k là số thực thì k.z = ka + kbi<br><br></div><div>&nbsp; &nbsp; - Giao hoán: z.z' = z'.<br><br>- Kết hợp: (z.z').z'' = z.(z'.z'')<br><br></div><div>&nbsp; &nbsp; - Phân phối của phép nhân đối với phép cộng<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp;z.(z' + z'') = z.z' + z.z''&nbsp;</div>]]></description>
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         <pubDate>2021-11-27 01:41:49 UTC</pubDate>
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         <title></title>
         <author>tranvdbtk00049</author>
         <link>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1914989624</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-11-27 01:42:33 UTC</pubDate>
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         <title>câu 1</title>
         <author>tranvdbtk00049</author>
         <link>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1914990241</link>
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         <pubDate>2021-11-27 01:43:17 UTC</pubDate>
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         <title>câu 3 </title>
         <author>kietnttk00057</author>
         <link>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1914994992</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-11-27 01:50:11 UTC</pubDate>
         <guid>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1914994992</guid>
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         <title>cách 2 của câu 4</title>
         <author>kietnttk00057</author>
         <link>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1914997240</link>
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         <pubDate>2021-11-27 01:52:43 UTC</pubDate>
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         <title>câu 2 - hoàng</title>
         <author>tranvdbtk00049</author>
         <link>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1915019610</link>
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         <pubDate>2021-11-27 02:21:54 UTC</pubDate>
         <guid>https://padlet.com/hoangdttk00017/g06dd9m2du6lgp4g/wish/1915019610</guid>
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