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Simplifying 5n2 = 9n + -2 Reorder the terms: 5n2 = -2 + 9n Solving 5n2 = -2 + 9n Solving for variable 'n'. Reorder the terms: 2 + -9n + 5n2 = -2 + 9n + 2 + -9n Reorder the terms: 2 + -9n + 5n2 = -2 + 2 + 9n + -9n Combine like terms: -2 + 2 = 0 2 + -9n + 5n2 = 0 + 9n + -9n 2 + -9n + 5n2 = 9n + -9n Combine like terms: 9n + -9n = 0 2 + -9n + 5n2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 0.4 + -1.8n + n2 = 0 Move the constant term to the right: Add '-0.4' to each side of the equation. 0.4 + -1.8n + -0.4 + n2 = 0 + -0.4 Reorder the terms: 0.4 + -0.4 + -1.8n + n2 = 0 + -0.4 Combine like terms: 0.4 + -0.4 = 0.0 0.0 + -1.8n + n2 = 0 + -0.4 -1.8n + n2 = 0 + -0.4 Combine like terms: 0 + -0.4 = -0.4 -1.8n + n2 = -0.4 The n term is -1.8n. Take half its coefficient (-0.9). Square it (0.81) and add it to both sides. Add '0.81' to each side of the equation. -1.8n + 0.81 + n2 = -0.4 + 0.81 Reorder the terms: 0.81 + -1.8n + n2 = -0.4 + 0.81 Combine like terms: -0.4 + 0.81 = 0.41 0.81 + -1.8n + n2 = 0.41 Factor a perfect square on the left side: (n + -0.9)(n + -0.9) = 0.41 Calculate the square root of the right side: 0.640312424 Break this problem into two subproblems by setting (n + -0.9) equal to 0.640312424 and -0.640312424.Subproblem 1
n + -0.9 = 0.640312424 Simplifying n + -0.9 = 0.640312424 Reorder the terms: -0.9 + n = 0.640312424 Solving -0.9 + n = 0.640312424 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.9' to each side of the equation. -0.9 + 0.9 + n = 0.640312424 + 0.9 Combine like terms: -0.9 + 0.9 = 0.0 0.0 + n = 0.640312424 + 0.9 n = 0.640312424 + 0.9 Combine like terms: 0.640312424 + 0.9 = 1.540312424 n = 1.540312424 Simplifying n = 1.540312424Subproblem 2
n + -0.9 = -0.640312424 Simplifying n + -0.9 = -0.640312424 Reorder the terms: -0.9 + n = -0.640312424 Solving -0.9 + n = -0.640312424 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.9' to each side of the equation. -0.9 + 0.9 + n = -0.640312424 + 0.9 Combine like terms: -0.9 + 0.9 = 0.0 0.0 + n = -0.640312424 + 0.9 n = -0.640312424 + 0.9 Combine like terms: -0.640312424 + 0.9 = 0.259687576 n = 0.259687576 Simplifying n = 0.259687576Solution
The solution to the problem is based on the solutions from the subproblems. n = {1.540312424, 0.259687576}
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