Question

x2+2x+1=0

me ayudan? plis​.... con procedimiento, es ecuaciones de segundo grado :)

Answer 1

SOLUCIÓN

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                           $Sea\:la\:ecuaci\'on\:cuadr\'atica:\\\\ax^2+bx+c=0\\\\\\Por\:f\'ormula\:general\:tenemos\:que:\\\\\mathrm{\boxed{x_{1,2}=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}}}\\\\\\Del\:problema:\\\\a=1,b=2,c=1\\\\\\ Entonces\:reemplazamos\\\\x_{1,2}=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\\x_{1,2}=\dfrac{-(2)\pm \sqrt{(2)^2-[4(1)(1)]}}{2(1)}\\\\\\x_{1,2}=\dfrac{-2\pm \sqrt{4-(4)}}{2}\\\\\\x_{1,2}=\dfrac{-2\pm \sqrt{0}}{2}\\\\\\x_{1,2}=\dfrac{-2\pm0}{2}$

                        $\Rightarrow\:x_{1}=\dfrac{-2+0}{2}\\\\\\x_{1}=\dfrac{-2}{2}\\\\\\\boxed{\boldsymbol{x_{1}=-1}}\\\\\\\Rightarrow\:x_{2}=\dfrac{-2-0}{2}\\\\\\x_{2}=\dfrac{-2}{2}\\\\\\\boxed{\boldsymbol{x_{2}=-1}}$