simplify using logarithm properties

a)4log(subscript25)15-4log(25)3

Express the following as a single logarithm

c)1/3(log(5)X+log(5)Y)-4log(5)Z

Simplify

d)log(2)20-log(2)5

thank you

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- January 15th 2008, 11:35 AMjohettLogs
simplify using logarithm properties

a)4log(subscript25)15-4log(25)3

Express the following as a single logarithm

c)1/3(log(5)X+log(5)Y)-4log(5)Z

Simplify

d)log(2)20-log(2)5

thank you - January 15th 2008, 12:09 PMwingless
A summary of the basic properties:

1-

2-

3- (c can be anything you want, don't forget that and )

4-

5-

Last two properties combined:

6-

7-Let's say that

If I multiply it by

From property 6,

Which means,

---------------------------

---------------------------

A)

...(From property 2)

---------------------------

B)

---------------------------

C)

- January 15th 2008, 12:28 PMjohett
how do you get the =4 answer?

- January 15th 2008, 12:37 PMwingless