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mathstudent55Best ResponseYou've already chosen the best response.1
You mean a rational expression.
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
A simplified rational fraction can't have radicals in the denominator.
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
dw:1356657899257:dw
 one year ago

Spartan_Of_AresBest ResponseYou've already chosen the best response.0
cross multiplication?
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
Now you need to look at all prime factors of 98 and twelve.
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
No, we're just simplifying, one step at a time.
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
What are the prime factors of 98 and of 12?
 one year ago

Spartan_Of_AresBest ResponseYou've already chosen the best response.0
7 7 2 and 3 2 2
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
Great. Every two of the same factor can be taken out of the root.
 one year ago

Spartan_Of_AresBest ResponseYou've already chosen the best response.0
so 7 2 and 3 2
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
dw:1356658078286:dw
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
dw:1356658116825:dw
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
As you mentioned, the 7 came out in the numerator, and the 2 came out in the denominator. But we still have a radical in the denominator which we can't leave there.
 one year ago

Spartan_Of_AresBest ResponseYou've already chosen the best response.0
what would i do to remove it?
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
dw:1356658236596:dw
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
We are going to use both of the above ideas to remove the radical from the denominator. First look at the denominator. What do you need to multiply the radical of the denominator to get rid of the radical? See example 1 above in drawing.
 one year ago

Spartan_Of_AresBest ResponseYou've already chosen the best response.0
@mathstudent55 times it self?
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
Right. If you multiply sqrt(3) by sqrt(3), you get sqrt(9) = 3, so you don't have a radical any more.
 one year ago

Spartan_Of_AresBest ResponseYou've already chosen the best response.0
so my denominator would be 18?
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
Now you need to look at example 2. in the drawing. If you multiply the denominator of the fraction by sqrt(3) what must you do to the numerator?
 one year ago

Spartan_Of_AresBest ResponseYou've already chosen the best response.0
multiply by the same
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
Exactly. So now look at the next drawing:
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
dw:1356658755142:dw
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
sqrt(9) is simply a whole number. That was the whole purpose of multiplying the denominator by sqrt(3)
 one year ago

Spartan_Of_AresBest ResponseYou've already chosen the best response.0
wait what do you mean do i just get\[18\] as my denominator?
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
You have 2 * sqrt(9) in the denominator. What is sqrt(9)?
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
Right. So now you have this: dw:1356658960784:dw
 one year ago

Spartan_Of_AresBest ResponseYou've already chosen the best response.0
6 is the denominator
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
dw:1356659058827:dw
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.1
This is considered simplified.
 one year ago

Spartan_Of_AresBest ResponseYou've already chosen the best response.0
thank you for the help
 one year ago
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