How do you write the standard form of the equation of the circle with the given the center (7,-3); tangent to the x-axis?
If the circle has a center at
then it has a radius of
The explicit standard circle equation for a circle with center at
which given the first version above
Some (but not all) teachers like to see this expanded to get rid of the double minus signs and express the squared radius as a single entity:
and still others are looking for the standard form of a general polynomial which is completely expanded with the right side as a series of terms in decreasing degree and the left side
(The third form above).