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OpenStudy (anonymous):
find the foci of each hyperbola.graph the hyperbola. x²/400 - y²/81=1
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OpenStudy (anonymous):
@DanJS
OpenStudy (anonymous):
ima go eat ill be back
OpenStudy (danjs):
ok, well just watch this old video , like 3 min https://www.youtube.com/watch?v=BtlD6vstD7A
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