Algebra II : Simplifying Radicals

Study concepts, example questions & explanations for Algebra II

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Example Questions

Example Question #111 : Simplifying 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 #112 : Simplifying Radicals

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 #113 : Simplifying 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 #114 : Simplifying 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

 .

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.

Since there is a number outside of the radicand, multiply the outside numbers and then the radicand.

Example Question #112 : Simplifying Radicals

Solve and simplify.

Possible Answers:

Correct answer:

Explanation:

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

Since there is a number outside of the radicand, multiply the outside numbers and then the radicand. 

Before we say that's the final answer, check the radicand to see that there are no square numbers that can be factored. A  can be factored and thats a perfect square. When I divide  with , I get  which doesn't have perfect square factors.

Therefore, our answer becomes

 

Example Question #12 : 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.

Since there is a number outside of the radicand, multiply the outside numbers and then the radicand. 

 

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