Can someone please show me exactly how to copmlete the quare for this problem. The *** will help you find what part.

Thanks

the goal is to get the equation in the following form ...

http://www.mathhelpforum.com/math-he...9fba2f16-1.gif

where (h,k) are the center coordinates and r is the radius.

http://www.mathhelpforum.com/math-he...16192a51-1.gif

start by dividing every term by 4 ...

http://www.mathhelpforum.com/math-he...45da81a1-1.gif

group the x-vales and y-values together, move the constant ...

http://www.mathhelpforum.com/math-he...69be65a8-1.gif

***you now want to complete the square for both x and y ... half the coefficient of each linear term, square the result, and add to both sides of the equation ...

http://www.mathhelpforum.com/math-he...ed17da30-1.gif

factor the quadratic trinomials of x and y ...

http://www.mathhelpforum.com/math-he...9b8adda6-1.gif

now, do you "see" h, k, and r?