MODERATE EXERCISES-Square Roots and Other Radicals
(1) True or false:
- = x, for all x
- , for all x
- , if n is odd
- False. To see this, evaluate the expression for x = -1.
- False. To see this, evaluate at x = 2, for example (or any non-zero x-value).
- True, since any odd power of -1 is -1.
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