obtenha o raio e centro da circunferência de equação: x²+y²+2x+4y - 1 =0
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Bom dia Paula!
Solução!
![x^{2} +y^{2}+2x+4y-1=0\\\\\
-2x=2\\\\
x= \dfrac{2}{-2}\\\\\\
x=-1\\\\\\\\\
-2y=4\\\\\\
y= \dfrac{4}{-2}\\\\\\
y=-2\\\\\\\\
\boxed{Centro(-1,-2)}](https://tex.z-dn.net/?f=+x%5E%7B2%7D+%2By%5E%7B2%7D%2B2x%2B4y-1%3D0%5C%5C%5C%5C%5C%0A-2x%3D2%5C%5C%5C%5C%0Ax%3D+%5Cdfrac%7B2%7D%7B-2%7D%5C%5C%5C%5C%5C%5C%0Ax%3D-1%5C%5C%5C%5C%5C%5C%5C%5C%5C%0A-2y%3D4%5C%5C%5C%5C%5C%5C%0Ay%3D+%5Cdfrac%7B4%7D%7B-2%7D%5C%5C%5C%5C%5C%5C%0Ay%3D-2%5C%5C%5C%5C%5C%5C%5C%5C%0A%5Cboxed%7BCentro%28-1%2C-2%29%7D+++ "x^{2} +y^{2}+2x+4y-1=0\\\\\
-2x=2\\\\
x= \dfrac{2}{-2}\\\\\\
x=-1\\\\\\\\\
-2y=4\\\\\\
y= \dfrac{4}{-2}\\\\\\
y=-2\\\\\\\\
\boxed{Centro(-1,-2)}")
Bom dia!
Bons estudos!
Solução!
Bom dia!
Bons estudos!
paulaysantos:
Des de já agradeço sua ajuda.
Dê nad!
Dê nada! rsrsrs
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