https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:rational-exponents-radicals/x2f8bb11595b61c86:radicals/v/introduction-to-square-roots 2021-06-21T15:29:06Z Intro to square roots Learn about the square root symbol (the principal root) and what it means to find a square root. Also learn how to solve simple square root equations. video https://cdn.kastatic.org/googleusercontent/9zEFqvfBXSC8o2N7kHZL7cdgacCFBCPUVG9i-IPqWPENAv2MOUqUB7r4mlnfeOWvqAR_8OKE6_EZGCcoGePk9aC4 Intro to square roots Learn about the square root symbol (the principal root) and what it means to find a square root. Also learn how to solve simple square root equations. https://cdn.kastatic.org/ka-youtube-converted/mbc3_e5lWw0.mp4/mbc3_e5lWw0.mp4 324 Square root and cube root https://www.khanacademy.org/math/grade-8-math-snc-aligned/x4383bdbca3d6abf7:squares-square-roots-cube-and-cube-roots/x4383bdbca3d6abf7:square-and-cubes/e/find-square-of-a-number-up-new 2025-08-14T04:48:08.828680332Z Find square of a number . Aakash Bagga exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:rational-exponents-radicals/x2f8bb11595b61c86:radicals/e/square_roots 2025-02-10T11:15:42.866710478Z Square roots Practice finding the square root of a perfect square positive integer. Jeff Ruberg exercise https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-roots/a/square-roots-of-perfect-squares-art 2023-12-11T22:13:00.981327266Z Square roots of perfect squares Learn how to find the square root of perfect squares like 25, 36, and 81. article https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:rational-exponents-radicals/x2f8bb11595b61c86:radicals/v/understanding-square-roots 2021-02-07T17:14:00Z Understanding square roots Learn how square root means what number multiplied by itself will result in the given number. Sal Khan video https://cdn.kastatic.org/googleusercontent/D_N0eBXbzJQwt5idHen9LQH5kogzYdTBihXN_04nWQ7JrEOU40HrHhac4TDFp_MhoVRDCYmpIPxhWHeKHHCrRKo Understanding square roots Learn how square root means what number multiplied by itself will result in the given number. https://cdn.kastatic.org/ka-youtube-converted/ROIfbUQrSY4.mp4/ROIfbUQrSY4.mp4 81 Square root and cube root https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:rational-exponents-radicals/x2f8bb11595b61c86:simplifying-square-roots/v/simplifying-square-roots-1 2021-06-15T15:59:48Z Simplifying square roots Roots are nice, but we prefer dealing with regular numbers as much as possible. So, for example, instead of √4 we prefer dealing with 2. What about roots that aren't equal to an integer, like √20? Still, we can write 20 as 4⋅5 and then use known properties to write √(4⋅5) as √4⋅√5, which is 2√5. We *simplified* √20. Sal Khan video https://cdn.kastatic.org/googleusercontent/d7Em5BQ44iFafCzEh5eoNNi5HfjNVbnqGN0LzgQHMyGlxqjmkSLhHFv7rncwilYMp1OR_pY32IhYdpCTluMOUfrodQ Simplifying square roots Roots are nice, but we prefer dealing with regular numbers as much as possible. So, for example, instead of √4 we prefer dealing with 2. What about roots that aren't equal to an integer, like √20? Still, we can write 20 as 4⋅5 and then use known properties to write √(4⋅5) as √4⋅√5, which is 2√5. We *simplified* √20. https://cdn.kastatic.org/ka-youtube-converted/cw3mp8oNASk.mp4/cw3mp8oNASk.mp4 189 Square root and cube root https://www.khanacademy.org/math/algebra-home/alg-intro-to-algebra/alg-irrational-numbers-intro/v/square-roots-and-real-numbers 2020-06-23T07:22:43Z Square roots and real numbers (old) An old video of Sal where he simplifies square roots in order to determine whether they represent rational or irrational numbers. Sal Khan video https://cdn.kastatic.org/googleusercontent/PJu1ouSUX6fDZz0-JqlwrhDZmS-AJRymz1i4KpcIgIxP07PyXb7tI_O91AsgyLlh-7iod6OQ2QxX63ZbpEQYz4-5 Square roots and real numbers (old) An old video of Sal where he simplifies square roots in order to determine whether they represent rational or irrational numbers. https://cdn.kastatic.org/ka-youtube-converted/BpBh8gvMifs.mp4/BpBh8gvMifs.mp4 619 Square root and cube root https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:rational-exponents-radicals/x2f8bb11595b61c86:radicals/v/introduction-to-cube-roots 2021-06-21T15:29:06Z Intro to cube roots Learn the meaning of cube roots and how to find them. Also learn how to find the cube root of a negative number. video https://cdn.kastatic.org/googleusercontent/KHn6tRQW1DJsLXSDPsxxHs8TbCf9u9x3W7z-E0lM31CIHsWnh5n6YIIFmYK80nlKHuaP-DoZqE1cwY5vrc8m8ZJw Intro to cube roots Learn the meaning of cube roots and how to find them. Also learn how to find the cube root of a negative number. https://cdn.kastatic.org/ka-youtube-converted/87_qIofPwhg.mp4/87_qIofPwhg.mp4 481 Square root and cube root