Words of “Wiz-dom”—When working with radicals always reduce them by factoring any number under the radical sign using perfect squares and removing the square root of the perfect square to the outside of the radical sign.
Let’s do a review:
1. Which of the following is equal to
2. For values of x where is defined, the expression is equal to
3. Which of the following is ALWAYS true about the expression ?
A. It is a real number.
B. It is an imaginary number.
C. n > 3
D. It is an imaginary number if n < 3.
E. It is a real number if n < 3.
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