Rewrite an equation in standard form to graph the circle

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x^2 + y^2 + 2x + 4y - 9 = 0
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Sir, I’ve got no earthly idea who you are nor where you came from (or why I hadn’t found this sooner) but I think you’re the only reason I’m going to pass my senior exam after having a subpar teacher. Probably gonna return to this channel even in college haha. Thanks for these videos!

izzym
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My son is in High School and has a teacher that doesn't always explain new process/concepts well. He has been extremely frustrated in his search for answers. Your video clarified everything for him, allowing him to understand how to solve the problems. Thank you so much for putting this video out and helping students like my son.

ShapeleszCreature
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dude i am so thankful to have you as a resource you saved me

KyleWhiteside-u
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you are actually saving me in honors algebra 2

dd-cfwk
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How did you go from (y^2+4y+4) to (y+2^2)?

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