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Mathematics 21 Online
OpenStudy (anonymous):

What are the foci of the following graph?

OpenStudy (anonymous):

OpenStudy (anonymous):

@Loser66

OpenStudy (loser66):

What are your a, b?? |dw:1439641540583:dw|

OpenStudy (loser66):

|dw:1439641578123:dw|

OpenStudy (anonymous):

a=6 b=2

OpenStudy (loser66):

Yes, now \(c^2 =a^2 -b^2\) , hence c =??

OpenStudy (anonymous):

c^2=32

OpenStudy (anonymous):

c=

OpenStudy (loser66):

|dw:1439643024963:dw|

OpenStudy (anonymous):

|dw:1439643056218:dw| then reduces to this?

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