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\( \Rightarrow \quad \partial x ^ { 2 } - 5 x + 4 = 0 \)

Ask by Lane Chandler. in Nepal
Dec 31,2024

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Answer

The solutions are \( x = 1 \) and \( x = 4 \).

Solution

It looks like you have the quadratic equation: \[ x^{2} - 5x + 4 = 0 \] Let's solve for \( x \). ### Method 1: Factoring We can try to factor the quadratic equation: \[ x^{2} - 5x + 4 = 0 \] Find two numbers that multiply to \( +4 \) and add up to \( -5 \). These numbers are \( -1 \) and \( -4 \). \[ (x - 1)(x - 4) = 0 \] Set each factor equal to zero: \[ x - 1 = 0 \quad \Rightarrow \quad x = 1 \] \[ x - 4 = 0 \quad \Rightarrow \quad x = 4 \] ### Method 2: Quadratic Formula Alternatively, you can use the quadratic formula: \[ x = \frac{-b \pm \sqrt{b^{2} - 4ac}}{2a} \] For the equation \( x^{2} - 5x + 4 = 0 \), the coefficients are: - \( a = 1 \) - \( b = -5 \) - \( c = 4 \) Plugging these into the formula: \[ x = \frac{-(-5) \pm \sqrt{(-5)^{2} - 4 \cdot 1 \cdot 4}}{2 \cdot 1} = \frac{5 \pm \sqrt{25 - 16}}{2} = \frac{5 \pm 3}{2} \] This gives two solutions: \[ x = \frac{5 + 3}{2} = 4 \quad \text{and} \quad x = \frac{5 - 3}{2} = 1 \] ### Conclusion The solutions to the equation \( x^{2} - 5x + 4 = 0 \) are: \[ x = 1 \quad \text{and} \quad x = 4 \]

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The Deep Dive

To solve the quadratic equation \( \partial x^2 - 5x + 4 = 0 \), you can use the quadratic formula, \( x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \). Here, \( a = 1 \), \( b = -5 \), and \( c = 4 \). Plugging in these values gives \( x = \frac{5 \pm \sqrt{(-5)^2 - 4 \cdot 1 \cdot 4}}{2 \cdot 1} = \frac{5 \pm \sqrt{25 - 16}}{2} = \frac{5 \pm 3}{2} \). Thus, the solutions are \( x = 4 \) and \( x = 1 \). Did you know that this formula originated from ancient India around 600 AD? Indian mathematicians like Brahmagupta devised methods for solving quadratic equations long before the quadratic formula was widely known in Europe. It’s a testament to the diverse history of mathematics! For practical applications, quadratic equations pop up everywhere—from physics, where they help describe projectile motion, to finance, where they can model profit maximization. Whenever you're maximizing or optimizing something, remember that a quadratic equation might be silently helping you find the best solution!

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