Learn how to simplify square root of a number when it is multiplied by another number

The video tutorial demonstrates how to simplify the expression 3 times the square root of 20. It begins by identifying the largest square factor of 20, which is 4. The instructor then rewrites 20 as a product of 4 and 5, allowing the square root of 4 to be simplified to 2. This results in the expression being simplified to 6 times the square root of 5.

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