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Simplify each expression without using a calculator. Remember that to simplify expressions with radicals, you can remove perfect square factors such as in this example: . Homework Help ✎

  1. What square number is a factor of 50?

    Here is a list of square numbers to get you started:

  2. Refer to part (a).

    To simplify completely you need to find the largest square number that is a factor of 72.

  3. Refer to part (a).