Algebra II : Algebra II

Study concepts, example questions & explanations for Algebra II

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Example Questions

Example Question #3 : Multiplying And Dividing Radicals

Simplify.

Possible Answers:

Correct answer:

Explanation:

Note: the product of the radicals is the same as the radical of the product: 

  which is 

Once we understand this, we can plug it into the equation:

 

Example Question #4 : Multiplying And Dividing Radicals

Simplify.

Possible Answers:

Correct answer:

Explanation:

We can simplify the radicals:

     and    

Plug in the simplifed radicals into the equation:

Example Question #5 : Multiplying And Dividing Radicals

Simplify and rationalize the denominator if needed,

Possible Answers:

Correct answer:

Explanation:

We can only simplify the radical in the numerator:  

 

Plugging in the simplifed radical into the equation we get:

Note: We simplified further because both the numerator and denominator had a "4" which canceled out. 

Now we want to rationalize the denominator,

 

Example Question #1 : Multiplying And Dividing Radicals

Simplify

Possible Answers:

Correct answer:

Explanation:

To simplify, you must use the Law of Exponents.

First you must multiply the coefficients then add the exponents:

Example Question #53 : Review And Other Topics

What is the product of  and ?

Possible Answers:

Correct answer:

Explanation:

First, simplify  to .

Then set up the multiplication problem:

 .

Multiply the terms outside of the radical, then the terms under the radical:

  then simplfy:  

The radical is still not in its simplest form and must be reduced further: 

. This is the radical in its simplest form. 

Example Question #2 : Multiplying And Dividing Radicals

Simplify 

Possible Answers:

Correct answer:

Explanation:

To divide the radicals, simply divide the numbers under the radical and leave them under the radical: 

 

Then simplify this radical: 

.

Example Question #1 : Multiplying And Dividing Radicals

Solve and simplify.

 

Possible Answers:

Correct answer:

Explanation:

When multiplying radicals, just take the values inside the radicand and perfom the operation.

 can't be reduced so this is the final answer.

Example Question #11 : Multiplying And Dividing Radicals

Solve and simplify.

Possible Answers:

Correct answer:

Explanation:

When multiplying radicals, just take the values inside the radicand and perfom the operation.

In this case, we have a perfect square so simplify that first.

Then, take that answer and multiply that with  to get the final answer.

.

 

Example Question #12 : Multiplying And Dividing Radicals

Solve and simplify.

Possible Answers:

Correct answer:

Explanation:

When dividing radicals, check the denominator to make sure it can be simplified or that there is a radical present that needs to be fixed. Since there is a radical present, we need to eliminate that radical. To do this, we multiply both top and bottom by . The reason is because we want a whole number in the denominator and multiplying by itself will achieve that. By multiplying itself, it creates a square number which can be reduced to .

With the denominator being , the numerator is . Final answer is .

 

 

 

Example Question #12 : Multiplying And Dividing Radicals

Solve and simplify.

Possible Answers:

Correct answer:

Explanation:

When dividing radicals, check the denominator to make sure it can be simplified or that there is a radical present that needs to be fixed.

Both  and  are perfect squares so they can be simplify.

Final answer is

 .

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