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OpenStudy (anonymous):
Find the center and radius of the circle whose equation is given. x^2+y^2+8x-9=0
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OpenStudy (anonymous):
Complete the square on the x part!
OpenStudy (anonymous):
what is the final answer
OpenStudy (anonymous):
That gives you \[ (x+4)^2 - 16 + y^2 - 9 = 0 \]. Simplified it is \[(x+4)^2+y^2=25=5^2\]
OpenStudy (anonymous):
The center is at (-4,0) and the radius is 5.
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