Writing an equation in general form (circles)

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Homework Help Overview

The discussion revolves around converting the equation of a circle from its standard form to general form, specifically the equation (x+9)²+(y-5)²=12.

Discussion Character

  • Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the definition of general form and the necessary steps to expand the given equation. There is a question about how to determine the constant term E in the general form equation.

Discussion Status

Some participants have provided guidance on how to approach the expansion of the equation, while others are exploring the implications of moving terms around to fit the general form structure. Multiple interpretations of how to handle the constant term are being considered.

Contextual Notes

There is a focus on ensuring the equation is correctly manipulated to fit the general form, with specific attention to the placement of the constant term.

kamo00800
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(keep in mind, its circle math.. :/)
Write the equation (x+9)2+(y-5)2=12 in general form.
 
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If my memory is correct, general form is just Ax2 + By2 + Cx + Dy + E = 0. In this case, A and B are 1. Just expand what you have to write your equation in general form.
 
okay, but
Ax2 + By2 + Cx + Dy + E = 0
where do i get E...
cause 12 is on the other side of the =
 
kamo00800 said:
okay, but
Ax2 + By2 + Cx + Dy + E = 0
where do i get E...
cause 12 is on the other side of the =
Then subtract 12 from both sides of the equation.
 

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