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Question
Mathematics
If log 2(x3)= log 2(x2)+ log 2 5- log 2 3, then x is equal to
Q. If
lo
g
2
(
x
3
)
=
lo
g
2
(
x
2
)
+
lo
g
2
5
−
lo
g
2
3
, then
x
is equal to
28
104
Continuity and Differentiability
Report Error
A
3
5
B
5
3
C
15
D
15
1
Solution:
Note that x should be positive
Now,
3
lo
g
2
x
=
2
lo
g
2
x
+
lo
g
2
(
3
5
)
⇒
lo
g
2
x
=
lo
g
2
(
3
5
)
⇒
x
=
3
5