anonymous
  • anonymous
Rationalize the denominator 5 ________________ (6-4sq root 7) - (8-5sq root 7)
Mathematics
katieb
  • katieb
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hartnn
  • hartnn
what have u tried ?
anonymous
  • anonymous
First, simplify the denominator: \[(6-4\sqrt7) - (8-5\sqrt7)\] Add the like terms.
anonymous
  • anonymous
There is no denominator....

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anonymous
  • anonymous
|dw:1354942795145:dw|
slaaibak
  • slaaibak
@Kelumptus there is. it's 5 / radical
anonymous
  • anonymous
wow you're telling me all of you guys like math????
anonymous
  • anonymous
@Kelumptus The fraction is \[\frac{5}{(6-4\sqrt7) - (8-5\sqrt7)}\]
anonymous
  • anonymous
Ahhh... i missed the 5 in the question, cheers.
anonymous
  • anonymous
|dw:1354942881953:dw|
hartnn
  • hartnn
what ?
anonymous
  • anonymous
Really?!!!!!!!!!!!!!!!! I'm RIGHT?!!!!!!!!!!!!!!!!!!!!
anonymous
  • anonymous
Nothing, disregard what's above
hartnn
  • hartnn
yeah, the previous answer was correct...
hartnn
  • hartnn
or were you typing options ? :P
anonymous
  • anonymous
I didn't mean to send the one above. thank god!
anonymous
  • anonymous
It was work i was doing on my own haha that "post" button is clicking itself eh? ;) jk
hartnn
  • hartnn
oh, wait...you sure there is no sign mistake ?
anonymous
  • anonymous
In the answer?
hartnn
  • hartnn
yeah, u sure about your answer ?
anonymous
  • anonymous
|dw:1354943056191:dw|
slaaibak
  • slaaibak
\[{5 \over -2 + \sqrt 7} = { {5 \over -2 + \sqrt 7} \times {-2 - \sqrt 7 \over -2 - \sqrt 7}} = { {10 + 5\sqrt 7} \over {3}}\]
hartnn
  • hartnn
yup. thats absolutely correct, just checking that you were sure or not ......
slaaibak
  • slaaibak
hartnn that's not correct.
hartnn
  • hartnn
O.o
anonymous
  • anonymous
HUH?
slaaibak
  • slaaibak
Check my answer for the correct thing.
hartnn
  • hartnn
oh, yes, slaaibak is right, you missed a 5, @InsanelyChaotic
anonymous
  • anonymous
Oh did I???? my error
anonymous
  • anonymous
thank you for the heads up!
anonymous
  • anonymous
|dw:1354943282970:dw|
hartnn
  • hartnn
yup.

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