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anonymous
 one year ago
Using the following equation, find the center and radius of the circle. You must show all work and calculations to receive credit.
x2 + 2x + y2 + 4y = 20
Help me please I will give a medal and fan!!
anonymous
 one year ago
Using the following equation, find the center and radius of the circle. You must show all work and calculations to receive credit. x2 + 2x + y2 + 4y = 20 Help me please I will give a medal and fan!!

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So far i have this x2 + 2x + y2 + 4y = 20 (x2 + 2x) + (y2 + 4y) = 20

misssunshinexxoxo
 one year ago
Best ResponseYou've already chosen the best response.0The radius is r = sqrt(25) = 5

misty1212
 one year ago
Best ResponseYou've already chosen the best response.0complete mr square twice, once for each term

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I need help figuring it out though, i have no idea whatsoever ho to do this problem.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@dan815 @Michele_Laino

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can someone walk me through this please?

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0for each to complete the square, take the coefficient on the linear x, y term and add to that quantity half of its square

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I honestly have no idea how to do that..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So do i have to figure out that equation? I honestly dont think ill be able to learn this, ive been trying for about an hour

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0(x^2 + 2x + 1^2 ) + (y^2 + 4y + 2^2) = 20 + 1^2 + 2^2 you take half the middle term and add the square of it , now you can do this (x+1)^2 + (y+2)^2 = 25

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0the center of a circle in that form is (x  h)^2 + (y  k)^2 = r^2 here C(h,k) = C(1 , 2) and r is the square root of 25

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so the radius is 25 and the center of the circle is 5?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0since 5 is the square root of 25

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0the center is the point (h,k) or ( 1 , 2),, how far each point on the circle is away from that center; the radius, is the square root of 25, or 5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i am so confused.....

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0after you complete the squares, you have an equation in the form of ... (xh)^2 + (yk)^2 = r^2 r= radius, and (h,k) = the center point
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