Algebra II : Logarithms

Study concepts, example questions & explanations for Algebra II

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Example Questions

Example Question #3015 : Algebra Ii

Add the logs:  

Possible Answers:

Correct answer:

Explanation:

Combine the logs together using the log properties.

This is also equivalent to:

OR:  

The answer is:  

Example Question #3016 : Algebra Ii

Combine as one log:  

Possible Answers:

Correct answer:

Explanation:

Whenever logs of the same bases are added, the terms inside the logs can be multiplied.

Likewise, when logs are subtracted, they are divided instead.

Evaluate the first two logs.

The expression becomes .

Divide the numbers inside.

The answer is:  

Example Question #41 : Simplifying Logarithms

Combine as one log, if possible:  

Possible Answers:

Correct answer:

Explanation:

According to the log property, we can combine the expression as one log

Be careful not to simplify  and subtract the quantity of the log and the integer.

The answer is:  

Example Question #3018 : Algebra Ii

Combine as one log:  

Possible Answers:

Correct answer:

Explanation:

According to log rules, the coefficients of the logs can be raised as powers for the inner quantity of the log.  Rewrite the terms.

Subtract the .

The answer is:  

Example Question #3019 : Algebra Ii

Combine as one log:  

Possible Answers:

Correct answer:

Explanation:

According to the log property, we can bring coefficients of logs as powers of the inner term of the log.

Rewrite the expression.

The answer is: 

Example Question #41 : Simplifying Logarithms

Add the following logs:  

Possible Answers:

Correct answer:

Explanation:

According to log properties, when there is a coefficient in front of the log, the coefficient can be used as the exponent for the inner quantity of the log.

Rewrite the expressions.

The expression becomes: 

When logs are added, they can be combined into one log by multiplying the two quantities.

When logs are subtracted, the quantities are then divided.

Reduce the fraction.

The answer is:  

Example Question #41 : Adding And Subtracting Logarithms

Combine the logs as one:  

Possible Answers:

Correct answer:

Explanation:

Evaluate each term.  Write the property of logs when they are subtracted.

The remaining term is:  

The answer is:  

Example Question #42 : Simplifying Logarithms

Solve .

Possible Answers:

Correct answer:

Explanation:

When you add logarithms of the same base, you multiply the terms inside the log:

A logarithm with a base that's the same as the term inside it is always equal to .

Example Question #43 : Simplifying Logarithms

Solve .

Possible Answers:

Correct answer:

Explanation:

When adding logs with the same base, we multiply the terms inside of them:

Now we can expand the log again so that the terms inside of it match the base:

Example Question #51 : Simplifying Logarithms

Combine as one log:  

Possible Answers:

Correct answer:

Explanation:

According to log rules, whenever we are adding the terms of the logs, we can simply combine the terms as one log by multiplication.

The answer is:  

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