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anonymous
 one year ago
I have a question, can anybody help me?
What is the general form of the equation of the given circle with center A?
http://cdn.ple.platoweb.com/PCAPASSETSPROD/258cc385d685420384bc0a8b50aa8568
x2 + y2 + 6x − 24y − 25 = 0
x2 + y2 − 6x + 24y + 128 = 0
x2 + y2 + 6x – 24y + 128 = 0
x2 + y2 + 6x − 24y + 148 = 0
anonymous
 one year ago
I have a question, can anybody help me? What is the general form of the equation of the given circle with center A? http://cdn.ple.platoweb.com/PCAPASSETSPROD/258cc385d685420384bc0a8b50aa8568 x2 + y2 + 6x − 24y − 25 = 0 x2 + y2 − 6x + 24y + 128 = 0 x2 + y2 + 6x – 24y + 128 = 0 x2 + y2 + 6x − 24y + 148 = 0

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The equation of a circle with the center (h, k) and radius r is \[(xh)^2+(yk)^2=r^2\] Your center is (3,12) so that's h and k. Your radius is 5. Plug in the numbers and expand the equation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0(x(3)2 + (y12)2 = 25 right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and what do i do next ? :s

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0foil (x+3)² and (y12)²

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is it (x+9) + (y + 144) = 25 ??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no. you need to use FOIL for both the x and y (x + 3)² + (y  12)² = 25 means \[(x+3)(x+3)+(y12)(y12)=25\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so it would be 6x and 24y right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay so we can take out b and c in the answers right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i don't know. I'm not actually working this problem. just following along to make sure your work is right. and now that I look it doesn't look like you can exclude both b and c yet

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ugh, i suck at math x.x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what did you get when you multiplied (x+3)(x+3)? you've got to show me something so I can see where you're going wrong

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you couldn't have gotten just 6x and 24y. Show me the whole equation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0once we got that part right I can show you how to simplify it into the form they want

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so this is what I got with FOIL (x3) + (x3) + (y12) + (y12) = 25

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0not sure if you have to multiply the 25 too..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok. so FOIL is actually multiplication. it stands for First, Inner, Outer, Last. just to help you remember how to distribute. I'm going to show you (x  3)(x  3). dw:1435246652683:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok. so FOIL is actually multiplication. it stands for First, Inner, Outer, Last. just to help you remember how to distribute. I'm going to show you (x + 3)(x + 3). dw:1435246844411:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0all those  should be + because our equation was (x + 3)(x + 3)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You try with (y 12)(dw:1435246933731:dwy12)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0right. so the equation for the circle becomes \[x^2+6x+9+y^224y+144=25\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and you combine like terms right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes. don't forget to subtract the 25 from the right side since they want that side to be 0.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[x ^{2} + y ^{2} 6x  24y + 128 = 0\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yaaay!, omg you saved my life, thanks a lot n.n

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you help me out in another question? please ? :c
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