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Find the Center and Radius of the Circle x2+y2+10x8y8=0x ^ { 2 } + y ^ { 2 } + 10 x - 8 y - 8 = 0

Question 303

Multiple Choice

Find the center and radius of the circle.
- x2+y2+10x8y8=0x ^ { 2 } + y ^ { 2 } + 10 x - 8 y - 8 = 0


A) center: (5,4) ( - 5,4 ) ; radius: 7
B) center: (4,5) ( 4 , - 5 ) ; radius: 7
C) center: (4,5) ( - 4,5 ) ; radius: 49
D) center: (5,4) ( 5 , - 4 ) ; radius: 49

Correct Answer:

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