1. Mathematical Key Points
EXAMPLES:
(1) Solve the standard equation form of a circle of the following equations below and find the center
and radius
a.
SOLUTION:
Explanation
*Given
*Arrange the terms according to the standard form
equation of a circle:
*we have put deducted zero in the y-terms since it
only entails that there is no movement of point for
the value of y.
( } { ( ) }
*completing the perfect trinomial
*the standard form equation of a circle
1
• The standard equation formula of
circle is:
2
• The coordinate for the center is:
𝐶 ,
3
• The radius would be:
