Horton Pope
01/30/2023 · Elementary School
\( Q(x)=-2 x^{2}-2 \sqrt[3]{\left(\frac{1}{2}\right)} x-2 \sqrt[3]{\left(\frac{1}{2}\right)^{2}} \) \( \angle \) Fared Ver ifcocon que ese polunomio no fiene unos
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Step-by-step Solution
Para determinar si el polinomio \( Q(x) = -2x^2 - 2\sqrt[3]{\left(\frac{1}{2}\right)}x - 2\sqrt[3]{\left(\frac{1}{2}\right)^2} \) tiene raíces reales, debemos encontrar las raíces del polinomio.
Para encontrar las raíces de un polinomio, debemos resolver la ecuación \( Q(x) = 0 \).
Entonces, la ecuación a resolver es:
\[ -2x^2 - 2\sqrt[3]{\left(\frac{1}{2}\right)}x - 2\sqrt[3]{\left(\frac{1}{2}\right)^2} = 0 \]
Vamos a resolver esta ecuación para determinar si el polinomio tiene raíces reales.
Solve the equation(The complex numbers system) by following steps:
- step0: Solve using the quadratic formula in the complex numbers system:
\(-2x^{2}-2\sqrt[3]{\frac{1}{2}}\times x-2\sqrt[3]{\left(\frac{1}{2}\right)^{2}}=0\)
- step1: Simplify:
\(-2x^{2}-\sqrt[3]{4}\times x-\sqrt[3]{2}=0\)
- step2: Multiply both sides:
\(2x^{2}+\sqrt[3]{4}\times x+\sqrt[3]{2}=0\)
- step3: Solve using the quadratic formula:
\(x=\frac{-\sqrt[3]{4}\pm \sqrt{\left(\sqrt[3]{4}\right)^{2}-4\times 2\sqrt[3]{2}}}{2\times 2}\)
- step4: Simplify the expression:
\(x=\frac{-\sqrt[3]{4}\pm \sqrt{\left(\sqrt[3]{4}\right)^{2}-4\times 2\sqrt[3]{2}}}{4}\)
- step5: Simplify the expression:
\(x=\frac{-\sqrt[3]{4}\pm \sqrt{-6\sqrt[3]{2}}}{4}\)
- step6: Simplify the expression:
\(x=\frac{-\sqrt[3]{4}\pm \sqrt[6]{432}\times i}{4}\)
- step7: Separate into possible cases:
\(\begin{align}&x=\frac{-\sqrt[3]{4}+\sqrt[6]{432}\times i}{4}\\&x=\frac{-\sqrt[3]{4}-\sqrt[6]{432}\times i}{4}\end{align}\)
- step8: Simplify the expression:
\(\begin{align}&x=-\frac{\sqrt[3]{4}}{4}+\frac{\sqrt[6]{432}}{4}i\\&x=\frac{-\sqrt[3]{4}-\sqrt[6]{432}\times i}{4}\end{align}\)
- step9: Simplify the expression:
\(\begin{align}&x=-\frac{\sqrt[3]{4}}{4}+\frac{\sqrt[6]{432}}{4}i\\&x=-\frac{\sqrt[3]{4}}{4}-\frac{\sqrt[6]{432}}{4}i\end{align}\)
- step10: Rewrite:
\(x_{1}=-\frac{\sqrt[3]{4}}{4}-\frac{\sqrt[6]{432}}{4}i,x_{2}=-\frac{\sqrt[3]{4}}{4}+\frac{\sqrt[6]{432}}{4}i\)
- step11: Remove the complex number(s):
\(\textrm{No real solution}\)
La solución de la ecuación \( -2x^2 - 2\sqrt[3]{\left(\frac{1}{2}\right)}x - 2\sqrt[3]{\left(\frac{1}{2}\right)^2} = 0 \) no tiene solución real. Por lo tanto, el polinomio \( Q(x) = -2x^2 - 2\sqrt[3]{\left(\frac{1}{2}\right)}x - 2\sqrt[3]{\left(\frac{1}{2}\right)^2} \) no tiene raíces reales.
Quick Answer
El polinomio \( Q(x) = -2x^2 - 2\sqrt[3]{\left(\frac{1}{2}\right)}x - 2\sqrt[3]{\left(\frac{1}{2}\right)^2} \) no tiene raíces reales.
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