wjowers861 wjowers861
  • 28-10-2020
  • Mathematics
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What’s the answer to these?

Whats the answer to these class=

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Alfpfeu
Alfpfeu Alfpfeu
  • 28-10-2020

Hello,

[tex]x^2+y^2-4x+2y-4=0\\\\<=> (x-2)^2-2^2+(y+1)^2-1^2-4=0 \\ \\<=>(x-2)^2+(y+1)^2=9[/tex]

[tex](x+2)^2+(y-3)^2=9\\\\<=> x^2+4x+4+y^2-6y+9=9\\ \\<=>x^2+y^2+4x-6y+4=0[/tex]

Thanks

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