There are no real nth roots of a number b. what can you conclude about the index n and the number b?

The  number b is negative and the index n is even.

Step-by-step explanation:

For example  there are no real roots of √-2  ( where n = 2) or ⁴√-4.

There are real roots of negative numbers, if n is odd.

For example ∛-8 which is -2.

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step-by-step explanation: