Question 975673
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Enumerating C you get *[tex \LARGE C\ =\ \left{-2,\,2\right}]


So, the subsets of C are:


The empty set because the empty set is a subset of every set.


*[tex \LARGE \left{-2\right}]


*[tex \LARGE \left{2\right}]


And the set C itself, *[tex \LARGE \left{-2,\,2\right}]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it

*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \