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Simplifying 2n2 + -2n + -240 = 0 Reorder the terms: -240 + -2n + 2n2 = 0 Solving -240 + -2n + 2n2 = 0 Solving for variable 'n'. Factor out the Greatest Common Factor (GCF), '2'. 2(-120 + -1n + n2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-120 + -1n + n2)' equal to zero and attempt to solve: Simplifying -120 + -1n + n2 = 0 Solving -120 + -1n + n2 = 0 Begin completing the square. Move the constant term to the right: Add '120' to each side of the equation. -120 + -1n + 120 + n2 = 0 + 120 Reorder the terms: -120 + 120 + -1n + n2 = 0 + 120 Combine like terms: -120 + 120 = 0 0 + -1n + n2 = 0 + 120 -1n + n2 = 0 + 120 Combine like terms: 0 + 120 = 120 -1n + n2 = 120 The n term is -1n. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1n + 0.25 + n2 = 120 + 0.25 Reorder the terms: 0.25 + -1n + n2 = 120 + 0.25 Combine like terms: 120 + 0.25 = 120.25 0.25 + -1n + n2 = 120.25 Factor a perfect square on the left side: (n + -0.5)(n + -0.5) = 120.25 Calculate the square root of the right side: 10.9658561 Break this problem into two subproblems by setting (n + -0.5) equal to 10.9658561 and -10.9658561.Subproblem 1
n + -0.5 = 10.9658561 Simplifying n + -0.5 = 10.9658561 Reorder the terms: -0.5 + n = 10.9658561 Solving -0.5 + n = 10.9658561 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + n = 10.9658561 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + n = 10.9658561 + 0.5 n = 10.9658561 + 0.5 Combine like terms: 10.9658561 + 0.5 = 11.4658561 n = 11.4658561 Simplifying n = 11.4658561Subproblem 2
n + -0.5 = -10.9658561 Simplifying n + -0.5 = -10.9658561 Reorder the terms: -0.5 + n = -10.9658561 Solving -0.5 + n = -10.9658561 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + n = -10.9658561 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + n = -10.9658561 + 0.5 n = -10.9658561 + 0.5 Combine like terms: -10.9658561 + 0.5 = -10.4658561 n = -10.4658561 Simplifying n = -10.4658561Solution
The solution to the problem is based on the solutions from the subproblems. n = {11.4658561, -10.4658561}Solution
n = {11.4658561, -10.4658561}
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