Find the equation of the circle concentric with the circle x2+ y2+ 4x + 6y+ 11=0 and passing through the point P(5,4).
Here is the link for the answer similar to your query:
https://www.meritnation.com/ask-answer/question/find-the-equation-of-the-circle-concentric-with-the-circle-x/math/7556281
https://www.meritnation.com/ask-answer/question/find-the-equation-of-the-circle-concentric-with-the-circle-x/math/7556281