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If x^y = 1 then what is the

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If x^y = 1 then what is the

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If x^y = 1, then what is the value of x?

(1) x < 0
(2) y is even integer

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Brent@GMATPrepNow wrote:
If x^y = 1, then what is the value of x?

(1) x < 0
(2) y is even integer
\[{x^y} = 1\]
\[? = x\]

Let´s ALGEBRAICALLY BIFURCATE statements (1) and (2) together, to be "shielded" that the right answer is __(E)____ :
\[\left( {1 + 2} \right)\,\,\,\left\{ \begin{gathered}
\,{\text{Take}}\,\,\left( {x,y} \right) = \left( { - 1,0} \right)\,\,\,\,\,\, \Rightarrow \,\,\,\,\,? = - 1 \hfill \\
\,{\text{Take}}\,\,\left( {x,y} \right) = \left( { - 2,0} \right)\,\,\,\,\,\, \Rightarrow \,\,\,\,\,? = - 2 \hfill \\
\end{gathered} \right.\,\,\,\,\]

This solution follows the notations and rationale taught in the GMATH method.

Regards,
Fabio.

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