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Boa noite!
Solução!
![a=1\\\\\
b=-1\\\\\
c=-2](https://tex.z-dn.net/?f=a%3D1%5C%5C%5C%5C%5C%0Ab%3D-1%5C%5C%5C%5C%5C%0Ac%3D-2 "a=1\\\\\
b=-1\\\\\
c=-2")
![Formula!\\\\\\\\\\
x= \dfrac{-b\pm \sqrt{b^{2}-4.a.c } }{2.a}\\\\\\\\\\
x= \dfrac{-(-1)\pm \sqrt{(-1)^{2}-4.1.(-2) } }{2.1}\\\\\\\\\
x= \dfrac{1\pm \sqrt{1+8 } }{2}\\\\\\\\\
x= \dfrac{1\pm \sqrt{9 } }{2}\\\\\\\\\
x= \dfrac{1\pm 3}{2}\\\\\\\\\
Raizes!\\\\\\\\
x_{1}= \dfrac{1+3}{2}= \dfrac{4}{2}=2\\\\\\\
x_{2}= \dfrac{1-3}{2}= \dfrac{-2}{2}=-1\\\\\\\](https://tex.z-dn.net/?f=Formula%21%5C%5C%5C%5C%5C%5C%5C%5C%5C%5C%0Ax%3D+%5Cdfrac%7B-b%5Cpm+%5Csqrt%7Bb%5E%7B2%7D-4.a.c+%7D+%7D%7B2.a%7D%5C%5C%5C%5C%5C%5C%5C%5C%5C%5C%0Ax%3D+%5Cdfrac%7B-%28-1%29%5Cpm+%5Csqrt%7B%28-1%29%5E%7B2%7D-4.1.%28-2%29+%7D+%7D%7B2.1%7D%5C%5C%5C%5C%5C%5C%5C%5C%5C+%0Ax%3D+%5Cdfrac%7B1%5Cpm+%5Csqrt%7B1%2B8+%7D+%7D%7B2%7D%5C%5C%5C%5C%5C%5C%5C%5C%5C%0A%0Ax%3D+%5Cdfrac%7B1%5Cpm+%5Csqrt%7B9+%7D+%7D%7B2%7D%5C%5C%5C%5C%5C%5C%5C%5C%5C+%0A%0Ax%3D+%5Cdfrac%7B1%5Cpm+3%7D%7B2%7D%5C%5C%5C%5C%5C%5C%5C%5C%5C%0ARaizes%21%5C%5C%5C%5C%5C%5C%5C%5C%0A+x_%7B1%7D%3D+%5Cdfrac%7B1%2B3%7D%7B2%7D%3D+%5Cdfrac%7B4%7D%7B2%7D%3D2%5C%5C%5C%5C%5C%5C%5C%0Ax_%7B2%7D%3D+%5Cdfrac%7B1-3%7D%7B2%7D%3D+%5Cdfrac%7B-2%7D%7B2%7D%3D-1%5C%5C%5C%5C%5C%5C%5C+%0A++++%0A+++++ "Formula!\\\\\\\\\\
x= \dfrac{-b\pm \sqrt{b^{2}-4.a.c } }{2.a}\\\\\\\\\\
x= \dfrac{-(-1)\pm \sqrt{(-1)^{2}-4.1.(-2) } }{2.1}\\\\\\\\\
x= \dfrac{1\pm \sqrt{1+8 } }{2}\\\\\\\\\
x= \dfrac{1\pm \sqrt{9 } }{2}\\\\\\\\\
x= \dfrac{1\pm 3}{2}\\\\\\\\\
Raizes!\\\\\\\\
x_{1}= \dfrac{1+3}{2}= \dfrac{4}{2}=2\\\\\\\
x_{2}= \dfrac{1-3}{2}= \dfrac{-2}{2}=-1\\\\\\\")
Da uma olhada no gráfico!
Boa noite!
Bons estudos!
Solução!
Da uma olhada no gráfico!
Boa noite!
Bons estudos!
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