<!-- wp:file {"id":4329,"href":"https://ytebacninh.edu.vn/wp-content/uploads/2025/08/KH-toan-khoa-YSDK-2A1.pdf","displayPreview":true} --> <div class="wp-block-file"><object class="wp-block-file__embed" data="https://ytebacninh.edu.vn/wp-content/uploads/2025/08/KH-toan-khoa-YSDK-2A1.pdf" type="application/pdf" style="width:100%;height:600px" aria-label="KH-toan-khoa-YSDK-2A1"></object><a id="wp-block-file--media-4d7f8ad5-81cd-4361-b848-175bf14f0302" href="https://ytebacninh.edu.vn/wp-content/uploads/2025/08/KH-toan-khoa-YSDK-2A1.pdf">KH-toan-khoa-YSDK-2A1</a><a href="https://ytebacninh.edu.vn/wp-content/uploads/2025/08/KH-toan-khoa-YSDK-2A1.pdf" class="wp-block-file__button wp-element-button" download aria-describedby="wp-block-file--media-4d7f8ad5-81cd-4361-b848-175bf14f0302">Tải xuống</a></div> <!-- /wp:file -->
