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Simplifying n2 + -7n = 5 Reorder the terms: -7n + n2 = 5 Solving -7n + n2 = 5 Solving for variable 'n'. Reorder the terms: -5 + -7n + n2 = 5 + -5 Combine like terms: 5 + -5 = 0 -5 + -7n + n2 = 0 Begin completing the square. Move the constant term to the right: Add '5' to each side of the equation. -5 + -7n + 5 + n2 = 0 + 5 Reorder the terms: -5 + 5 + -7n + n2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -7n + n2 = 0 + 5 -7n + n2 = 0 + 5 Combine like terms: 0 + 5 = 5 -7n + n2 = 5 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 = 5 + 12.25 Reorder the terms: 12.25 + -7n + n2 = 5 + 12.25 Combine like terms: 5 + 12.25 = 17.25 12.25 + -7n + n2 = 17.25 Factor a perfect square on the left side: (n + -3.5)(n + -3.5) = 17.25 Calculate the square root of the right side: 4.153311931 Break this problem into two subproblems by setting (n + -3.5) equal to 4.153311931 and -4.153311931.Subproblem 1
n + -3.5 = 4.153311931 Simplifying n + -3.5 = 4.153311931 Reorder the terms: -3.5 + n = 4.153311931 Solving -3.5 + n = 4.153311931 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 = 4.153311931 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + n = 4.153311931 + 3.5 n = 4.153311931 + 3.5 Combine like terms: 4.153311931 + 3.5 = 7.653311931 n = 7.653311931 Simplifying n = 7.653311931Subproblem 2
n + -3.5 = -4.153311931 Simplifying n + -3.5 = -4.153311931 Reorder the terms: -3.5 + n = -4.153311931 Solving -3.5 + n = -4.153311931 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 = -4.153311931 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + n = -4.153311931 + 3.5 n = -4.153311931 + 3.5 Combine like terms: -4.153311931 + 3.5 = -0.653311931 n = -0.653311931 Simplifying n = -0.653311931Solution
The solution to the problem is based on the solutions from the subproblems. n = {7.653311931, -0.653311931}
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