AIR MATH

Math Question

15. What is the radius and center for \( x^{2}+4 x+4+ \) \( y^{2}=43 ? \)
\( r=\sqrt{39} ; \) center is \( (2,0) \)
\( r=\sqrt{43} ; \) center is \( (-2,0) \)
\( r=\sqrt{39} ; \) center is \( (-2,0) \)
\( r=\sqrt{43} \); center is \( (2,0) \)

Solution

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