circunferência C de equação X2+y2+2x-4y-4=0 me ajudem por favor
Anônimo:
Sara,o que é que você quer que faça?
poderia me informar o calculo todo?
Respostas
respondido por:
4
Boa tarde Sara!
Solução!
![-2a=2\\\\
a= \frac{2}{-2}\\\\\
\boxed{x=-1}\\\\\\\
-2b=-4\\\\
b= \frac{-4}{-2}\\\\\\
b=2\\\\\\\\\\
\boxed{Centro(-1,2)}](https://tex.z-dn.net/?f=-2a%3D2%5C%5C%5C%5C%0Aa%3D+%5Cfrac%7B2%7D%7B-2%7D%5C%5C%5C%5C%5C%0A%5Cboxed%7Bx%3D-1%7D%5C%5C%5C%5C%5C%5C%5C%0A-2b%3D-4%5C%5C%5C%5C%0Ab%3D+%5Cfrac%7B-4%7D%7B-2%7D%5C%5C%5C%5C%5C%5C%0Ab%3D2%5C%5C%5C%5C%5C%5C%5C%5C%5C%5C%0A%5Cboxed%7BCentro%28-1%2C2%29%7D++ "-2a=2\\\\
a= \frac{2}{-2}\\\\\
\boxed{x=-1}\\\\\\\
-2b=-4\\\\
b= \frac{-4}{-2}\\\\\\
b=2\\\\\\\\\\
\boxed{Centro(-1,2)}")
![R^{2}=(-1)^{2}+2^{2}+4\\\\\
R^{2}=1+4+4\\\\\
R^{2}=9\\\\\
R= \sqrt{9} \\\\\
\boxed{r=3}](https://tex.z-dn.net/?f=R%5E%7B2%7D%3D%28-1%29%5E%7B2%7D%2B2%5E%7B2%7D%2B4%5C%5C%5C%5C%5C%0AR%5E%7B2%7D%3D1%2B4%2B4%5C%5C%5C%5C%5C%0AR%5E%7B2%7D%3D9%5C%5C%5C%5C%5C%0AR%3D+%5Csqrt%7B9%7D+%5C%5C%5C%5C%5C+%0A%5Cboxed%7Br%3D3%7D "R^{2}=(-1)^{2}+2^{2}+4\\\\\
R^{2}=1+4+4\\\\\
R^{2}=9\\\\\
R= \sqrt{9} \\\\\
\boxed{r=3}")
Boa tarde!
Bons estudos!
Solução!
Boa tarde!
Bons estudos!
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