1.

\left. \begin{array} { l } { \text { If } x y z = 1 , \text { then simplity } } \\ { ( 1 + x + y ^ { - 1 } ) \times ( 1 + y + z ^ { - 1 } ) ^ { - 1 } \times ( 1 + z + x ^ { - 1 } ) ^ { - 1 } } \end{array} \right.

Answer»


Discussion

No Comment Found