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OpenStudy (anonymous):
x^2 + 2x + y^2 + 4y = 9. What is the center?
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OpenStudy (anonymous):
An explanation of how to find it would also be very helpful because I have another like this. Thank you. (:
OpenStudy (anonymous):
Sorry I thought it was Radius Center = (-g,-f)
OpenStudy (anonymous):
standard equation is \[x^2 + y^2 + 2gx + 2fy +c = 0 \]
OpenStudy (anonymous):
Now when we compare coefficient g=1 and f =2
OpenStudy (anonymous):
so that makes center \[(-1,-2)\]
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myininaya (myininaya):
x^2+2x+1+y^2+4y+4=9+1+4 (x+1)^2+(y+2)^2=14 center is (-1,-2) gj ishaan
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