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Mathematics
Mathematics
Problem
The term independent of
x
x
x
in the expansion of
(
x
+
k
/
x
2
)
6
(x + k/x^{2})^{6}
(
x
+
k
/
x
2
)
6
equals
540
540
540
. Find the value(s) of
k
k
k
.
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