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Solve each equation by completing the square. 1) \( p^{2}+14 p-38=0 \)

Ask by Curry Weston. in the United States
Feb 03,2025

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The solutions are \( p = -7 + \sqrt{87} \) and \( p = -7 - \sqrt{87} \).

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To solve the equation \( p^{2}+14 p-38=0 \) by completing the square, first, we want to isolate the quadratic and linear terms. Start by adding 38 to both sides: \[ p^2 + 14p = 38. \] Next, we need to complete the square. Take half of the coefficient of \( p \), which is 14, divide it by 2 to get 7, and then square it to get \( 49 \). We then rewrite the equation: \[ p^2 + 14p + 49 = 38 + 49. \] This simplifies to: \[ (p + 7)^2 = 87. \] To solve for \( p \), take the square root of both sides: \[ p + 7 = \pm \sqrt{87}. \] Finally, subtract 7 from both sides: \[ p = -7 \pm \sqrt{87}. \] Thus, the solutions are: \[ p = -7 + \sqrt{87} \quad \text{and} \quad p = -7 - \sqrt{87}. \]

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