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Simplifying 2n2 + 14n + -8 = 0 Reorder the terms: -8 + 14n + 2n2 = 0 Solving -8 + 14n + 2n2 = 0 Solving for variable 'n'. Factor out the Greatest Common Factor (GCF), '2'. 2(-4 + 7n + n2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-4 + 7n + n2)' equal to zero and attempt to solve: Simplifying -4 + 7n + n2 = 0 Solving -4 + 7n + n2 = 0 Begin completing the square. Move the constant term to the right: Add '4' to each side of the equation. -4 + 7n + 4 + n2 = 0 + 4 Reorder the terms: -4 + 4 + 7n + n2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 7n + n2 = 0 + 4 7n + n2 = 0 + 4 Combine like terms: 0 + 4 = 4 7n + n2 = 4 The n term is 7n. Take half its coefficient (3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. 7n + 12.25 + n2 = 4 + 12.25 Reorder the terms: 12.25 + 7n + n2 = 4 + 12.25 Combine like terms: 4 + 12.25 = 16.25 12.25 + 7n + n2 = 16.25 Factor a perfect square on the left side: (n + 3.5)(n + 3.5) = 16.25 Calculate the square root of the right side: 4.031128874 Break this problem into two subproblems by setting (n + 3.5) equal to 4.031128874 and -4.031128874.Subproblem 1
n + 3.5 = 4.031128874 Simplifying n + 3.5 = 4.031128874 Reorder the terms: 3.5 + n = 4.031128874 Solving 3.5 + n = 4.031128874 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + n = 4.031128874 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + n = 4.031128874 + -3.5 n = 4.031128874 + -3.5 Combine like terms: 4.031128874 + -3.5 = 0.531128874 n = 0.531128874 Simplifying n = 0.531128874Subproblem 2
n + 3.5 = -4.031128874 Simplifying n + 3.5 = -4.031128874 Reorder the terms: 3.5 + n = -4.031128874 Solving 3.5 + n = -4.031128874 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + n = -4.031128874 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + n = -4.031128874 + -3.5 n = -4.031128874 + -3.5 Combine like terms: -4.031128874 + -3.5 = -7.531128874 n = -7.531128874 Simplifying n = -7.531128874Solution
The solution to the problem is based on the solutions from the subproblems. n = {0.531128874, -7.531128874}Solution
n = {0.531128874, -7.531128874}
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