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Mathematics 11 Online
OpenStudy (anonymous):

@mathstudent55

OpenStudy (anonymous):

OpenStudy (mathstudent55):

Remember what we did before. Factor the 18 in the radical in the numerator.

OpenStudy (mathstudent55):

Then look at the denominator, what is sqrt(36)?

OpenStudy (anonymous):

divide by 6 and 6

OpenStudy (mathstudent55):

18 is in a radical. What are the the prime factors of 18? Yes, sqrt(36) = 6

OpenStudy (anonymous):

3 3 2

OpenStudy (mathstudent55):

You have two factors that are the same. That means you can pull them out of the radical.

OpenStudy (mathstudent55):

|dw:1356660281296:dw|

OpenStudy (mathstudent55):

As you know, sqrt(36) = 6. That's in the denomniator. Also as you wrote, 18 = 3 x 3 x 2. That's in the radical in the numerator.

OpenStudy (mathstudent55):

|dw:1356660403586:dw|

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