Black Huang
05/14/2023 · Middle School

Se \( \frac{1}{4} x^{2}-5 x+8=0 \), entāo de acordo com a fórmula quadrática: \[ x=\frac{5 \pm \sqrt{17}}{\frac{1}{2}} \]

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Para resolver a equação \( \frac{1}{4} x^{2}-5 x+8=0 \) usando a fórmula quadrática, siga os seguintes passos: A fórmula quadrática é: \[ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \] Primeiro, identifique os valores de \( a \), \( b \) e \( c \) na equação \( \frac{1}{4} x^{2}-5 x+8=0 \): \[ a = \frac{1}{4} \] \[ b = -5 \] \[ c = 8 \] Agora, substitua esses valores na fórmula quadrática: \[ x = \frac{-(-5) \pm \sqrt{(-5)^2 - 4 \cdot \frac{1}{4} \cdot 8}}{2 \cdot \frac{1}{4}} \] Simplifique o termo dentro do radical: \[ x = \frac{5 \pm \sqrt{25 - 8}}{\frac{1}{2}} \] \[ x = \frac{5 \pm \sqrt{17}}{\frac{1}{2}} \] Portanto, a solução da equação é: \[ x = \frac{5 \pm \sqrt{17}}{\frac{1}{2}} \] Isso está de acordo com a fórmula quadrática que você forneceu.

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A solução da equação é \( x = \frac{5 \pm \sqrt{17}}{\frac{1}{2}} \).
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