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Logarithms Practice Test 2
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© examsnet.com
Question : 2
Total: 39
If
log
a
(
19
3
4
√
3
5
×
7
2
)
=
3
log
a
19
−
2
log
a
7
−
x
then which one of the following is true?
x
a
=
3
4
5
a
x
=
3
5
4
a
4
5
=
3
x
x
a
=
3
5
4
None is true
Validate
Solution:
log
a
(
19
3
4
√
3
5
×
7
2
)
=
3
log
a
19
−
2
log
a
7
−
x
⇒
log
a
19
3
−
log
a
(
4
√
3
5
×
7
2
)
=
3
log
a
19
−
2
log
a
7
−
x
⇒
3
log
a
19
−
log
a
3
5
4
−
2
log
a
7
=
3
log
a
19
−
2
log
a
7
−
x
⇒
log
a
3
5
4
=
x
⇒
a
x
=
3
5
4
© examsnet.com
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