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Simplifying 2n2 + -9n + 6 = 0 Reorder the terms: 6 + -9n + 2n2 = 0 Solving 6 + -9n + 2n2 = 0 Solving for variable 'n'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 3 + -4.5n + n2 = 0 Move the constant term to the right: Add '-3' to each side of the equation. 3 + -4.5n + -3 + n2 = 0 + -3 Reorder the terms: 3 + -3 + -4.5n + n2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4.5n + n2 = 0 + -3 -4.5n + n2 = 0 + -3 Combine like terms: 0 + -3 = -3 -4.5n + n2 = -3 The n term is -4.5n. Take half its coefficient (-2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. -4.5n + 5.0625 + n2 = -3 + 5.0625 Reorder the terms: 5.0625 + -4.5n + n2 = -3 + 5.0625 Combine like terms: -3 + 5.0625 = 2.0625 5.0625 + -4.5n + n2 = 2.0625 Factor a perfect square on the left side: (n + -2.25)(n + -2.25) = 2.0625 Calculate the square root of the right side: 1.436140662 Break this problem into two subproblems by setting (n + -2.25) equal to 1.436140662 and -1.436140662.Subproblem 1
n + -2.25 = 1.436140662 Simplifying n + -2.25 = 1.436140662 Reorder the terms: -2.25 + n = 1.436140662 Solving -2.25 + n = 1.436140662 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + n = 1.436140662 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + n = 1.436140662 + 2.25 n = 1.436140662 + 2.25 Combine like terms: 1.436140662 + 2.25 = 3.686140662 n = 3.686140662 Simplifying n = 3.686140662Subproblem 2
n + -2.25 = -1.436140662 Simplifying n + -2.25 = -1.436140662 Reorder the terms: -2.25 + n = -1.436140662 Solving -2.25 + n = -1.436140662 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + n = -1.436140662 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + n = -1.436140662 + 2.25 n = -1.436140662 + 2.25 Combine like terms: -1.436140662 + 2.25 = 0.813859338 n = 0.813859338 Simplifying n = 0.813859338Solution
The solution to the problem is based on the solutions from the subproblems. n = {3.686140662, 0.813859338}
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