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Simplifying n2 + -20 = -5n Reorder the terms: -20 + n2 = -5n Solving -20 + n2 = -5n Solving for variable 'n'. Reorder the terms: -20 + 5n + n2 = -5n + 5n Combine like terms: -5n + 5n = 0 -20 + 5n + n2 = 0 Begin completing the square. Move the constant term to the right: Add '20' to each side of the equation. -20 + 5n + 20 + n2 = 0 + 20 Reorder the terms: -20 + 20 + 5n + n2 = 0 + 20 Combine like terms: -20 + 20 = 0 0 + 5n + n2 = 0 + 20 5n + n2 = 0 + 20 Combine like terms: 0 + 20 = 20 5n + n2 = 20 The n term is 5n. Take half its coefficient (2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. 5n + 6.25 + n2 = 20 + 6.25 Reorder the terms: 6.25 + 5n + n2 = 20 + 6.25 Combine like terms: 20 + 6.25 = 26.25 6.25 + 5n + n2 = 26.25 Factor a perfect square on the left side: (n + 2.5)(n + 2.5) = 26.25 Calculate the square root of the right side: 5.123475383 Break this problem into two subproblems by setting (n + 2.5) equal to 5.123475383 and -5.123475383.Subproblem 1
n + 2.5 = 5.123475383 Simplifying n + 2.5 = 5.123475383 Reorder the terms: 2.5 + n = 5.123475383 Solving 2.5 + n = 5.123475383 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + n = 5.123475383 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + n = 5.123475383 + -2.5 n = 5.123475383 + -2.5 Combine like terms: 5.123475383 + -2.5 = 2.623475383 n = 2.623475383 Simplifying n = 2.623475383Subproblem 2
n + 2.5 = -5.123475383 Simplifying n + 2.5 = -5.123475383 Reorder the terms: 2.5 + n = -5.123475383 Solving 2.5 + n = -5.123475383 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + n = -5.123475383 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + n = -5.123475383 + -2.5 n = -5.123475383 + -2.5 Combine like terms: -5.123475383 + -2.5 = -7.623475383 n = -7.623475383 Simplifying n = -7.623475383Solution
The solution to the problem is based on the solutions from the subproblems. n = {2.623475383, -7.623475383}
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