Let the equation of a circle be x^2+y^2-14x+8y+56

Question

Let the equation of a circle be x^2+y^2-14x+8y+56 
 
a.	Find the standard form of the circle
b.	Find the center of the circle
c.	Find the radius of the circle

Ivy · Answer

Equation of the circle in standard form

Cindy · Answer

Help me please

Focus · Answer

Find the coordinate of the centre and the radius of the circle x2+y2-14x-8y+56=0