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mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Remember what we did before. Factor the 18 in the radical in the numerator.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Then look at the denominator, what is sqrt(36)?

Spartan_Of_Ares
 one year ago
Best ResponseYou've already chosen the best response.0divide by 6 and 6

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.118 is in a radical. What are the the prime factors of 18? Yes, sqrt(36) = 6

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1You have two factors that are the same. That means you can pull them out of the radical.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1356660281296:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1As 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.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1356660403586:dw

Spartan_Of_Ares
 one year ago
Best ResponseYou've already chosen the best response.0wait wouldnt 3 be outside the radical?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Right. I didn't take it out yet, but that's correct. sqrt(9) = 3

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1356660480815:dw

Spartan_Of_Ares
 one year ago
Best ResponseYou've already chosen the best response.0thats not complete right?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Now the last step is to divide the 3 in the numerator and the 18 in the denominator by the largest number that divides into both.

Spartan_Of_Ares
 one year ago
Best ResponseYou've already chosen the best response.0so 3 to get 2/6

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.13/3 = 1 18/3 = 6

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1356660621873:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Not 2/6, but sqrt(2)/6

Spartan_Of_Ares
 one year ago
Best ResponseYou've already chosen the best response.0thanks for the help!
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