Question

why is (-81)1/2 not defined

Answer 1

not defined?

Answer 2

this is a defined number

Answer 3

Is it in a word problem? We do have extraneous solutions. That means that some solutions do not work and we must exclude them from the solution set.

Answer 4

It asked me to explain why it isn't defined...... This is the question: Explain why (-81)1/2 is not defined.

Answer 5

Do you mean:
\[(-81)^{\frac{1}{2}}\]

Answer 6

maybe because it is a complex number