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Simplifying n2 + -4n + -4 = -2.5 Reorder the terms: -4 + -4n + n2 = -2.5 Solving -4 + -4n + n2 = -2.5 Solving for variable 'n'. Reorder the terms: -4 + 2.5 + -4n + n2 = -2.5 + 2.5 Combine like terms: -4 + 2.5 = -1.5 -1.5 + -4n + n2 = -2.5 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 -1.5 + -4n + n2 = 0.0 Begin completing the square. Move the constant term to the right: Add '1.5' to each side of the equation. -1.5 + -4n + 1.5 + n2 = 0.0 + 1.5 Reorder the terms: -1.5 + 1.5 + -4n + n2 = 0.0 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + -4n + n2 = 0.0 + 1.5 -4n + n2 = 0.0 + 1.5 Combine like terms: 0.0 + 1.5 = 1.5 -4n + n2 = 1.5 The n term is -4n. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4n + 4 + n2 = 1.5 + 4 Reorder the terms: 4 + -4n + n2 = 1.5 + 4 Combine like terms: 1.5 + 4 = 5.5 4 + -4n + n2 = 5.5 Factor a perfect square on the left side: (n + -2)(n + -2) = 5.5 Calculate the square root of the right side: 2.34520788 Break this problem into two subproblems by setting (n + -2) equal to 2.34520788 and -2.34520788.Subproblem 1
n + -2 = 2.34520788 Simplifying n + -2 = 2.34520788 Reorder the terms: -2 + n = 2.34520788 Solving -2 + n = 2.34520788 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + n = 2.34520788 + 2 Combine like terms: -2 + 2 = 0 0 + n = 2.34520788 + 2 n = 2.34520788 + 2 Combine like terms: 2.34520788 + 2 = 4.34520788 n = 4.34520788 Simplifying n = 4.34520788Subproblem 2
n + -2 = -2.34520788 Simplifying n + -2 = -2.34520788 Reorder the terms: -2 + n = -2.34520788 Solving -2 + n = -2.34520788 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + n = -2.34520788 + 2 Combine like terms: -2 + 2 = 0 0 + n = -2.34520788 + 2 n = -2.34520788 + 2 Combine like terms: -2.34520788 + 2 = -0.34520788 n = -0.34520788 Simplifying n = -0.34520788Solution
The solution to the problem is based on the solutions from the subproblems. n = {4.34520788, -0.34520788}
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