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x x 49 x
Question
X^X =49 X=?
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Answer to a math question X^X =49 X=?
Birdie
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$x=7$
$\begin{array} { l }x=-7,\\x=7\end{array}$
$\begin{array} { l }x_1=-7,& x_2=7\end{array}$
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