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GiggleSquid Group Title

Find the center of this ellipse: 9x^(2)+y^(2)+36x-4y+31=0

  • one year ago
  • one year ago

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  1. GiggleSquid Group Title
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    @lgbasallote or @satellite73 you know these?

    • one year ago
  2. lgbasallote Group Title
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    not good with graphs sorry

    • one year ago
  3. GiggleSquid Group Title
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    these are the worst references ever

    • one year ago
  4. bhaweshwebmaster Group Title
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    9x^(2)+y^(2)+36x-4y+31=0 or, 9 (x^2+4x +4) +(y^2-4y+4)-9=0 or, 9(x+2)^2 + (y-2)^2 = 9 or, (x+2)^2 +(y-2)^2 /9 = 1.... see that the centre is (-2,2)

    • one year ago
  5. agentc0re Group Title
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    The purplemath.com reference is exactly what you need to do this.

    • one year ago
  6. zzr0ck3r Group Title
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    what is wrong with @bhaweshwebmasters answer?

    • one year ago
  7. zzr0ck3r Group Title
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    do you know how to complete the square? Thats all we are doing on these.

    • one year ago
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