SOLUTION: Please help me: It says to Complete the square to find the center of the radius of the given circle.Could you show me the steps in completing this. A{{{x^2+y^2+6x-4y-3=0}}} B

Question 94328: Please help me: It says to Complete the square to find the center of the radius of the given circle.Could you show me the steps in completing this.
A
B
Thank you
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
A. Complete the square to find the centre and the radius.
Add 3 to both sides.
Group the like-terms together on the left side.
Now complete the squares in the x- and y-terms. To do this, you add the square of half the x-coefficient and the square of half the y-coefficient to both sides of the equation.
For the x's this would be and for the y's this would be , so we get:
Factor the trinomials and simplify.
Now compare this with the standard form for a circle with centre at (h, k) and radius r.
and you can see that the centre (h, k) is at (-3, 2) while the radius is = 4.
Follow this approach on the second problem and see how you do.
If you still have problems, please re-post.
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