complete the square x^2-6x+y^2+5=0 and write the equation of the circle in standard form.

Question

freckles · Answer

Do you know how to complete the square 
First of all, do you know what to add here in order for this to be a complete square:
$$x^2+bx+?$$

freckles · Answer

what should that ? mark be?

freckles · Answer

$$x^2+bx+(\frac{b}{2})^2$$
$$\text{ Just make sure the coefficient of } x^2 \text{ is } 1 $$
$$\text{ then look at the coefficient of the middle term (the guy with the x in it}$$
$$\text{ add the square of the quotient of that number and 2 } $$

freckles · Answer

So ...

freckles · Answer

You find what we need to add here:
$$x^2-6x+?$$