1. Square roots and exponents

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2. Re: Square roots and exponents

Originally Posted by asilvester635
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The index on the radical cannot be negative. You should write is as radical with index 3 and the radicand (-1), or (-1)^(1/3). The answer would be (-1)

3. Re: Square roots and exponents

The problem in my homework has negative in front of it so I can't just ignore the negative.

4. Re: Square roots and exponents

Originally Posted by asilvester635
The problem in my homework has negative in front of it so I can't just ignore the negative.
If the cubic root is in the denominator, then you could write 1/cubr(-1), or 1/(-1)^(1/3), or (-1)^(-1/3), cubr((-1)^(-1)) The index 3 on the radical must be positive. It could be a typo error in you homework assignment.

is your problem -cubr(-1)? that could be written as -(-1)^(1/3). the answer would be 1.