SOLUTION: A circle has centre C (2,1) and radius 5. Show that the equation of the circle can be written as x^ + y^ - 4x - 2y - 20 = 0

SOLUTION: A circle has centre C (2,1) and radius 5. Show that the equation of the circle can be written as x^ + y^ - 4x - 2y - 20 = 0

Algebra.Com

Question 946250: A circle has centre C (2,1) and radius 5. Show that the equation of the circle can be written as x^ + y^ - 4x - 2y - 20 = 0
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!

 

Edwin

RELATED QUESTIONS
Hi there,really stumped by this question. For a circle with the equation x^2 + y^2 - 2x - (answered by ikleyn)

x^2 + y^2 - 4x + 2y = 15 i) Find the coordinates of the centre C of the cirlce and the (answered by ewatrrr)

the circle with equation 2(x+4)^2+2(y-1)^2-18=0 has centre C and radius r units, where..? (answered by Edwin McCravy)

If the equation of the circle 4x^2+24x+4y^2-32y=44 can be written as (x-a)^2+(y-b)^2=r^2, (answered by rothauserc)

1.find the equation of the circle w/ center (1, 4) and radius 5. 2.find the equation of... (answered by Fombitz)

find the circle and radius of circle given equation... (answered by lynnlo)

A circle whose centre lies on the line y=3x-1, touches both axes. Find the equation of... (answered by ikleyn)

the circle c1 has centre a and equation x2+y2-6x+2y-15=0 find the co-ordinates of A and... (answered by Gogonati)

A circle passes through the centre of a circle X^2 + Y^2 - 3X - 4Y - 1 = 0 and it's... (answered by KMST)