Question
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\( 1 \leftarrow \quad \begin{array}{l}\text { Solve } \\ 10 x^{4}-19 x^{2}+6=0\end{array} \)

Ask by Hampton George. in the United States
Feb 03,2025

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Answer

The solutions to the equation \(10x^4 - 19x^2 + 6 = 0\) are: \[ x = -\frac{\sqrt{6}}{2}, \quad x = -\frac{\sqrt{10}}{5}, \quad x = \frac{\sqrt{10}}{5}, \quad x = \frac{\sqrt{6}}{2} \]

Solution

Solve the equation \( 10x^4-19x^2+6=0 \). Solve the equation by following steps: - step0: Solve for \(x\): \(10x^{4}-19x^{2}+6=0\) - step1: Factor the expression: \(\left(2x^{2}-3\right)\left(5x^{2}-2\right)=0\) - step2: Separate into possible cases: \(\begin{align}&2x^{2}-3=0\\&5x^{2}-2=0\end{align}\) - step3: Solve the equation: \(\begin{align}&x=\frac{\sqrt{6}}{2}\\&x=-\frac{\sqrt{6}}{2}\\&x=\frac{\sqrt{10}}{5}\\&x=-\frac{\sqrt{10}}{5}\end{align}\) - step4: Rewrite: \(x_{1}=-\frac{\sqrt{6}}{2},x_{2}=-\frac{\sqrt{10}}{5},x_{3}=\frac{\sqrt{10}}{5},x_{4}=\frac{\sqrt{6}}{2}\) The solutions to the equation \(10x^{4}-19x^{2}+6=0\) are: \[ x_{1}=-\frac{\sqrt{6}}{2}, \quad x_{2}=-\frac{\sqrt{10}}{5}, \quad x_{3}=\frac{\sqrt{10}}{5}, \quad x_{4}=\frac{\sqrt{6}}{2} \]

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Mind Expander

To solve the equation \(10x^4 - 19x^2 + 6 = 0\), we can make a substitution. Let \(y = x^2\), transforming the equation into a quadratic form: \(10y^2 - 19y + 6 = 0\). Using the quadratic formula \(y = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\), we substitute \(a = 10, b = -19, c = 6\) to find the roots for \(y\). With the discriminant calculated as \((-19)^2 - 4 \cdot 10 \cdot 6 = 361 - 240 = 121\), we proceed with finding \(y\): \[ y = \frac{19 \pm \sqrt{121}}{20} = \frac{19 \pm 11}{20} \] This gives us two possible values for \(y\): \(y_1 = \frac{30}{20} = 1.5\) and \(y_2 = \frac{8}{20} = 0.4\). Now, translating back to \(x\) gives us \(x^2 = 1.5\) (so \(x = \pm \sqrt{1.5}\)) and \(x^2 = 0.4\) (so \(x = \pm \sqrt{0.4}\)). Thus, the solutions are \(x = \pm\sqrt{1.5}, \pm\sqrt{0.4}\). And there you have it, your solutions flaunting like stars in the mathematical sky!

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