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Mathematics
Mathematics
Problem
The real numbers
x
x
x
and
y
y
y
satisfy
log
8
x
+
log
4
(
y
2
)
=
5
\log_8 x + \log_4(y^2) = 5
lo
g
8
x
+
lo
g
4
(
y
2
)
=
5
and
log
8
y
+
log
4
(
x
2
)
=
7
\log_8 y + \log_4(x^2) = 7
lo
g
8
y
+
lo
g
4
(
x
2
)
=
7
then the value of
x
y
xy
x
y
is (a) 1024 (b) 512 (c) 256 (d) 81
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