Mathematics Help - MathHelp.com - 1000+ Online Math Lessons - By MathHelp.com
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| 00:0-1 | The following is a selected video from your teacher.com where | |
| 00:03 | you can browse over 450 complete math lessons with example | |
| 00:07 | videos , interactive practice problems , self tests and more | |
| 00:11 | . Try a complete lesson today at your teacher dot | |
| 00:14 | com To simplify a square root Where the number inside | |
| 00:22 | the radical is not a perfect square . Like the | |
| 00:26 | squared of 98 . We start by making a factor | |
| 00:30 | tree for the number inside 98 is two times 49 | |
| 00:38 | . And if you know your perfect squares , you'll | |
| 00:40 | recognize 49 as seven times seven what we're looking for | |
| 00:48 | in our factor tree are pairs of factors that are | |
| 00:52 | the same . If a factor pairs up then it | |
| 00:57 | will come out of the radical . If a factor | |
| 01:01 | does not pair up then it stays inside the radical | |
| 01:06 | . So here since our 7s pair up A seven | |
| 01:12 | will come out of the radical since the two does | |
| 01:17 | not pair up , it stays inside the radical . | |
| 01:23 | and our answer is seven route to obviously it helps | |
| 01:29 | to be able to recognize your perfect squares as you | |
| 01:33 | make your factor tree . So in the next example | |
| 01:36 | , let's review the perfect squares for the numbers between | |
| 01:40 | one and 15 . |
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