{"id":2686,"date":"2020-02-24T18:39:38","date_gmt":"2020-02-24T18:39:38","guid":{"rendered":"https:\/\/zzip.dk\/video\/?p=2686"},"modified":"2026-03-23T16:37:04","modified_gmt":"2026-03-23T15:37:04","slug":"ing09","status":"publish","type":"post","link":"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/","title":{"rendered":"Matematik &#8211; 9: Udregn kvadratroden af tallet to"},"content":{"rendered":"<div class=\"wpb-content-wrapper\">[vc_row][vc_column]<div class=\"vcex-module vcex-teaser vcex-teaser-two wpex-flex wpex-flex-col wpex-shadow-lg wpex-surface-2 wpex-p-20 wpex-rounded vc_custom_1774280003379\" style=\"background:#e8f9f9;\"><div class=\"vcex-teaser-content\"><h2 class=\"vcex-teaser-heading wpex-heading wpex-text-lg\">Ingeni\u00f8rens matematikvideo 9. Udregn kvadratroden af tallet to(2)<\/h2><div class=\"vcex-teaser-text wpex-mt-10 wpex-last-mb-0 wpex-clr\"><p>En kvadratrod er det tal, som ganget med sig selv giver et bestemt resultat. Hvis x2=25, er kvadratroden af 25 alts\u00e5 5. Begrebet bruges i b\u00e5de geometri og algebra, fx n\u00e5r man skal finde sidel\u00e6ngden i et kvadrat eller l\u00f8se ligninger med potenser. Denne video forklarer trin for trin, hvad en kvadratrod er, hvordan man beregner den, og hvorfor kvadratr\u00f8dder h\u00e6nger t\u00e6t sammen med anden potens. Videoen giver konkrete eksempler og visuelle forklaringer, der g\u00f8r det let for elever at forst\u00e5 og arbejde sikkert med kvadratr\u00f8dder i matematik.<br \/>\nDenne video indg\u00e5r i Ingeni\u00f8rens serie p\u00e5 37 videoer med forklaringer p\u00e5 matematik i folkeskolens 9-10. klasse<\/p>\n<\/div><\/div><\/div>[vc_video link=&#8221;https:\/\/youtu.be\/IQjLejKyzrw&#8221;][\/vc_column][\/vc_row]\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_video link=&#8221;https:\/\/youtu.be\/IQjLejKyzrw&#8221;][\/vc_column][\/vc_row]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[78],"tags":[],"post_series":[],"class_list":["post-2686","post","type-post","status-publish","format-standard","hentry","category-mat-c","entry","no-media"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hvad er en kvadratrod? \/ kvadratrod af tallet to (matematikvideo 09)<\/title>\n<meta name=\"description\" content=\"F\u00e5 en klar forklaring p\u00e5, hvad en kvadratrod er, og hvordan kvadratr\u00f8dder bruges i b\u00e5de geometri, ligninger og matematiske beregninger.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hvad er en kvadratrod? \/ kvadratrod af tallet to (matematikvideo 09)\" \/>\n<meta property=\"og:description\" content=\"F\u00e5 en klar forklaring p\u00e5, hvad en kvadratrod er, og hvordan kvadratr\u00f8dder bruges i b\u00e5de geometri, ligninger og matematiske beregninger.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/\" \/>\n<meta property=\"og:site_name\" content=\"DUDAs videoer\" \/>\n<meta property=\"article:published_time\" content=\"2020-02-24T18:39:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-23T15:37:04+00:00\" \/>\n<meta name=\"author\" content=\"Menares\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Menares\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/matematik\\\/mat-c\\\/ing09\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/matematik\\\/mat-c\\\/ing09\\\/\"},\"author\":{\"name\":\"Menares\",\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#\\\/schema\\\/person\\\/d55ed332af3aa2b904423a4852c509c5\"},\"headline\":\"Matematik &#8211; 9: Udregn kvadratroden af tallet to\",\"datePublished\":\"2020-02-24T18:39:38+00:00\",\"dateModified\":\"2026-03-23T15:37:04+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/matematik\\\/mat-c\\\/ing09\\\/\"},\"wordCount\":162,\"publisher\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#\\\/schema\\\/person\\\/d55ed332af3aa2b904423a4852c509c5\"},\"articleSection\":[\"Matematik for 7-10 kl\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/matematik\\\/mat-c\\\/ing09\\\/\",\"url\":\"https:\\\/\\\/duda.dk\\\/video\\\/matematik\\\/mat-c\\\/ing09\\\/\",\"name\":\"Hvad er en kvadratrod? \\\/ kvadratrod af tallet to (matematikvideo 09)\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#website\"},\"datePublished\":\"2020-02-24T18:39:38+00:00\",\"dateModified\":\"2026-03-23T15:37:04+00:00\",\"description\":\"F\u00e5 en klar forklaring p\u00e5, hvad en kvadratrod er, og hvordan kvadratr\u00f8dder bruges i b\u00e5de geometri, ligninger og matematiske beregninger.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/matematik\\\/mat-c\\\/ing09\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/duda.dk\\\/video\\\/matematik\\\/mat-c\\\/ing09\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/matematik\\\/mat-c\\\/ing09\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/duda.dk\\\/video\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Matematik &#8211; 9: Udregn kvadratroden af tallet to\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#website\",\"url\":\"https:\\\/\\\/duda.dk\\\/video\\\/\",\"name\":\"DUDAs videoer\",\"description\":\"Undervisningsfilm og l\u00e6ringsvideoer for folkeskolen\",\"publisher\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#\\\/schema\\\/person\\\/d55ed332af3aa2b904423a4852c509c5\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/duda.dk\\\/video\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#\\\/schema\\\/person\\\/d55ed332af3aa2b904423a4852c509c5\",\"name\":\"Menares\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g\",\"caption\":\"Menares\"},\"logo\":{\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g\"},\"url\":\"#\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Hvad er en kvadratrod? \/ kvadratrod af tallet to (matematikvideo 09)","description":"F\u00e5 en klar forklaring p\u00e5, hvad en kvadratrod er, og hvordan kvadratr\u00f8dder bruges i b\u00e5de geometri, ligninger og matematiske beregninger.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/","og_locale":"en_US","og_type":"article","og_title":"Hvad er en kvadratrod? \/ kvadratrod af tallet to (matematikvideo 09)","og_description":"F\u00e5 en klar forklaring p\u00e5, hvad en kvadratrod er, og hvordan kvadratr\u00f8dder bruges i b\u00e5de geometri, ligninger og matematiske beregninger.","og_url":"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/","og_site_name":"DUDAs videoer","article_published_time":"2020-02-24T18:39:38+00:00","article_modified_time":"2026-03-23T15:37:04+00:00","author":"Menares","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Menares","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/#article","isPartOf":{"@id":"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/"},"author":{"name":"Menares","@id":"https:\/\/duda.dk\/video\/#\/schema\/person\/d55ed332af3aa2b904423a4852c509c5"},"headline":"Matematik &#8211; 9: Udregn kvadratroden af tallet to","datePublished":"2020-02-24T18:39:38+00:00","dateModified":"2026-03-23T15:37:04+00:00","mainEntityOfPage":{"@id":"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/"},"wordCount":162,"publisher":{"@id":"https:\/\/duda.dk\/video\/#\/schema\/person\/d55ed332af3aa2b904423a4852c509c5"},"articleSection":["Matematik for 7-10 kl"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/","url":"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/","name":"Hvad er en kvadratrod? \/ kvadratrod af tallet to (matematikvideo 09)","isPartOf":{"@id":"https:\/\/duda.dk\/video\/#website"},"datePublished":"2020-02-24T18:39:38+00:00","dateModified":"2026-03-23T15:37:04+00:00","description":"F\u00e5 en klar forklaring p\u00e5, hvad en kvadratrod er, og hvordan kvadratr\u00f8dder bruges i b\u00e5de geometri, ligninger og matematiske beregninger.","breadcrumb":{"@id":"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/duda.dk\/video\/matematik\/mat-c\/ing09\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/duda.dk\/video\/"},{"@type":"ListItem","position":2,"name":"Matematik &#8211; 9: Udregn kvadratroden af tallet to"}]},{"@type":"WebSite","@id":"https:\/\/duda.dk\/video\/#website","url":"https:\/\/duda.dk\/video\/","name":"DUDAs videoer","description":"Undervisningsfilm og l\u00e6ringsvideoer for folkeskolen","publisher":{"@id":"https:\/\/duda.dk\/video\/#\/schema\/person\/d55ed332af3aa2b904423a4852c509c5"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/duda.dk\/video\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/duda.dk\/video\/#\/schema\/person\/d55ed332af3aa2b904423a4852c509c5","name":"Menares","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g","caption":"Menares"},"logo":{"@id":"https:\/\/secure.gravatar.com\/avatar\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g"},"url":"#"}]}},"_links":{"self":[{"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/posts\/2686","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/comments?post=2686"}],"version-history":[{"count":5,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/posts\/2686\/revisions"}],"predecessor-version":[{"id":3160,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/posts\/2686\/revisions\/3160"}],"wp:attachment":[{"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/media?parent=2686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/categories?post=2686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/tags?post=2686"},{"taxonomy":"post_series","embeddable":true,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/post_series?post=2686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}