Example 3

Root, Square
Rewrite the radical using the imaginary unit .
  1. Rewrite the value under the radical as the product of –1 and a positive value.
  2. Rewrite the radical as .
  3. If possible, rewrite the positive value as the product of a square number and another whole number.
  4. Simplify the radical by finding the square root of the square number. The simplified expression will be in the form whole number • • radical.
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