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GiggleSquid

  • 3 years ago

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

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  1. GiggleSquid
    • 3 years ago
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    @lgbasallote or @satellite73 you know these?

  2. lgbasallote
    • 3 years ago
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    not good with graphs sorry

  3. GiggleSquid
    • 3 years ago
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    these are the worst references ever

  4. bhaweshwebmaster
    • 3 years ago
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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)

  5. agentc0re
    • 3 years ago
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    The purplemath.com reference is exactly what you need to do this.

  6. zzr0ck3r
    • 3 years ago
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    what is wrong with @bhaweshwebmasters answer?

  7. zzr0ck3r
    • 3 years ago
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    do you know how to complete the square? Thats all we are doing on these.

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