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      <title>GROUP 4 by Hà Linh</title>
      <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn</link>
      <description>Hãy cùng chiêm ngưỡng vẻ đẹp của Toán học cùng với nhóm 4 nhé :3</description>
      <language>en-us</language>
      <pubDate>2023-10-29 18:37:39 UTC</pubDate>
      <lastBuildDate>2023-10-31 15:46:08 UTC</lastBuildDate>
      <webMaster>hello@padlet.com</webMaster>
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      <item>
         <title>10:2=?</title>
         <author>nguyenhalinh201103</author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2767785074</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-29 18:48:51 UTC</pubDate>
         <guid>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2767785074</guid>
      </item>
      <item>
         <title>Khái niệm Toán học</title>
         <author>nguyenhalinh201103</author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770348398</link>
         <description><![CDATA[<p>Toán học là <strong>môn khoa học nghiên cứu về các số, cấu trúc, không gian và các phép biến đổi</strong>. Nói một cách khác, người ta cho rằng đó là môn học về "hình và số".</p>]]></description>
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         <pubDate>2023-10-31 09:15:33 UTC</pubDate>
         <guid>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770348398</guid>
      </item>
      <item>
         <title>Định lí py-ta-go</title>
         <author>tramy04022003</author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770348985</link>
         <description><![CDATA[<p>Trong một tam giác vuông bình phương cạnh huyền (cạnh đối diện với góc vuông) bằng tổng bình phương của hai cạnh góc vuông.</p>]]></description>
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         <pubDate>2023-10-31 09:16:05 UTC</pubDate>
         <guid>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770348985</guid>
      </item>
      <item>
         <title>Tính bình phương của 13</title>
         <author>nguyenhalinh201103</author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770349101</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 09:16:14 UTC</pubDate>
         <guid>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770349101</guid>
      </item>
      <item>
         <title>Hai góc đối đỉnh là hai góc mà mỗi cạnh của góc này là tia đối của một cạnh góc kia</title>
         <author>nguyenhalinh201103</author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770349600</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 09:16:45 UTC</pubDate>
         <guid>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770349600</guid>
      </item>
      <item>
         <title>7 hằng đẳng thức đáng nhớ</title>
         <author>tramy04022003</author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770350106</link>
         <description><![CDATA[<p>1, Bình phương của một tổng: <strong>( A + B )<sup>2</sup>&nbsp;= A<sup>2</sup>&nbsp;+ 2AB + B<sup>2</sup>.</strong></p><p>&nbsp;</p><p>2, Bình phương của một hiệu: <strong>( A – B )<sup>2</sup>&nbsp;= A<sup>2</sup>&nbsp;– 2AB + B<sup>2</sup>.</strong></p><p>&nbsp;</p><p>3, Hiệu của hai bình phương: <strong>A<sup>2</sup>&nbsp;– B<sup>2</sup>&nbsp;= ( A – B )( A + B ).</strong></p><p>&nbsp;</p><p>4, Lập phương của một tổng: <strong>( A + B )<sup>3</sup>&nbsp;= A<sup>3</sup>&nbsp;+ 3A<sup>2</sup>B + 3AB<sup>2</sup>&nbsp;+ B<sup>3</sup>.</strong></p><p>&nbsp;</p><p>5, Lập phương của một hiệu: <strong>( A – B )<sup>3</sup>&nbsp;= A<sup>3</sup>&nbsp;– 3A<sup>2</sup>B + 3AB<sup>2</sup>&nbsp;– B<sup>3</sup>.</strong></p><p>&nbsp;</p><p>6, Tổng của hai lập phương: <strong>A<sup>3</sup>&nbsp;+ B<sup>3</sup>&nbsp;= ( A + B )( A<sup>2</sup>&nbsp;– AB + B<sup>2</sup>&nbsp;).</strong></p><p>&nbsp;</p><p>7, Hiệu của hai lập phương: <strong>A<sup>3</sup>&nbsp;– B<sup>3</sup>&nbsp;= ( A – B )( A<sup>2</sup>&nbsp;+ AB + B<sup>2</sup>&nbsp;).</strong></p>]]></description>
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         <pubDate>2023-10-31 09:17:13 UTC</pubDate>
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      </item>
      <item>
         <title>Công thức tính diện tích tam giác</title>
         <author>tramy04022003</author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770350999</link>
         <description><![CDATA[<p><strong>S = (a x h) / 2</strong></p>]]></description>
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         <pubDate>2023-10-31 09:18:03 UTC</pubDate>
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      <item>
         <title>Tính diện tích hình tròn</title>
         <author>tramy04022003</author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770352620</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 09:19:40 UTC</pubDate>
         <guid>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770352620</guid>
      </item>
      <item>
         <title>Nêu cách chứng minh 3 điểm thẳng hàng</title>
         <author>tramy04022003</author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770352986</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 09:19:58 UTC</pubDate>
         <guid>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770352986</guid>
      </item>
      <item>
         <title>Định lí Thales</title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770833536</link>
         <description><![CDATA[<p>Nếu 1 đường thẳng song song với 1 cạnh của tam giác đó và cắt 2 cạnh còn lại thì nó định ra trên 2 cạnh đó những <a rel="noopener noreferrer nofollow" href="https://vi.wikipedia.org/wiki/%C4%90o%E1%BA%A1n_th%E1%BA%B3ng">đoạn thẳng</a> tương ứng tỉ lệ<em>.</em></p>]]></description>
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         <pubDate>2023-10-31 15:14:05 UTC</pubDate>
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      </item>
      <item>
         <title>Tóm tắt công thức về luỹ thừa</title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770842194</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 15:19:20 UTC</pubDate>
         <guid>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770842194</guid>
      </item>
      <item>
         <title>Vẻ đẹp của Toán học</title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770844776</link>
         <description><![CDATA[<p>Hoa hướng dương - Đồ thị hàm r = 2tan(3.34p)</p>]]></description>
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         <pubDate>2023-10-31 15:20:54 UTC</pubDate>
         <guid>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770844776</guid>
      </item>
      <item>
         <title>Hình nơ 3 cánh - Đồ thị hàm r = 2cos(3.01p)</title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770845648</link>
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         <pubDate>2023-10-31 15:21:29 UTC</pubDate>
         <guid>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770845648</guid>
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      <item>
         <title>Hình không gian</title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770850091</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 15:24:24 UTC</pubDate>
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      <item>
         <title>Chọn đáp án đúng.</title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770855688</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 15:27:40 UTC</pubDate>
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         <title></title>
         <author></author>
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         <pubDate>2023-10-31 15:28:57 UTC</pubDate>
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      <item>
         <title>Ví dụ về vecto</title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770860984</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 15:30:49 UTC</pubDate>
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      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770862219</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 15:31:35 UTC</pubDate>
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      <item>
         <title>Math is interesting!❤</title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770865255</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 15:33:38 UTC</pubDate>
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         <title></title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770869459</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 15:36:23 UTC</pubDate>
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         <title></title>
         <author></author>
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         <pubDate>2023-10-31 15:37:29 UTC</pubDate>
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      <item>
         <title>Function machine</title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770872583</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 15:38:20 UTC</pubDate>
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         <title>Simplifying Fractions</title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770875326</link>
         <description><![CDATA[]]></description>
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         <pubDate>2023-10-31 15:40:05 UTC</pubDate>
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      <item>
         <title>Probability</title>
         <author></author>
         <link>https://padlet.com/nguyenhalinh201103/lcyrlhe59vqsv6cn/wish/2770877926</link>
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         <pubDate>2023-10-31 15:41:42 UTC</pubDate>
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      <item>
         <title>Đố vui Toán học</title>
         <author></author>
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         <pubDate>2023-10-31 15:42:26 UTC</pubDate>
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