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Mathematics 8 Online
OpenStudy (anonymous):

g

OpenStudy (anonymous):

?

OpenStudy (anonymous):

\[\frac{6 }{ \sqrt{7}-\sqrt{5} }\]

OpenStudy (anonymous):

what are the instructions?

OpenStudy (anonymous):

simplify

OpenStudy (anonymous):

ok so we know that we cant have radicals in the denominator so multiply it by (square root 7- square root5) on both the top and bottom. i'll draw it if u'd like

OpenStudy (anonymous):

yes please

OpenStudy (anonymous):

ok just a sec :)

OpenStudy (anonymous):

oops... i forgot how to do this im really sorry. its like its right there ya know? i just cant remember :(

OpenStudy (anonymous):

what about

OpenStudy (anonymous):

\[\left( 2+6\sqrt{7} \right)(9-5\sqrt{7})\]

OpenStudy (anonymous):

uhm, i have no clue where you got that :\ sorry!

OpenStudy (anonymous):

lol its another problem

OpenStudy (anonymous):

ohhhh<facepalm> ok lemme see if i can work it out

OpenStudy (anonymous):

do you have an answer key?

OpenStudy (anonymous):

no

OpenStudy (anonymous):

ok lemme check my answer on my calculator then. gimme a sec :)

OpenStudy (anonymous):

k ty

OpenStudy (anonymous):

ok lemme draw it out

OpenStudy (anonymous):

|dw:1352962209437:dw|

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