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Simplifying 3n2 = -12n + -7 Reorder the terms: 3n2 = -7 + -12n Solving 3n2 = -7 + -12n Solving for variable 'n'. Reorder the terms: 7 + 12n + 3n2 = -7 + -12n + 7 + 12n Reorder the terms: 7 + 12n + 3n2 = -7 + 7 + -12n + 12n Combine like terms: -7 + 7 = 0 7 + 12n + 3n2 = 0 + -12n + 12n 7 + 12n + 3n2 = -12n + 12n Combine like terms: -12n + 12n = 0 7 + 12n + 3n2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 2.333333333 + 4n + n2 = 0 Move the constant term to the right: Add '-2.333333333' to each side of the equation. 2.333333333 + 4n + -2.333333333 + n2 = 0 + -2.333333333 Reorder the terms: 2.333333333 + -2.333333333 + 4n + n2 = 0 + -2.333333333 Combine like terms: 2.333333333 + -2.333333333 = 0.000000000 0.000000000 + 4n + n2 = 0 + -2.333333333 4n + n2 = 0 + -2.333333333 Combine like terms: 0 + -2.333333333 = -2.333333333 4n + n2 = -2.333333333 The n term is 4n. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4n + 4 + n2 = -2.333333333 + 4 Reorder the terms: 4 + 4n + n2 = -2.333333333 + 4 Combine like terms: -2.333333333 + 4 = 1.666666667 4 + 4n + n2 = 1.666666667 Factor a perfect square on the left side: (n + 2)(n + 2) = 1.666666667 Calculate the square root of the right side: 1.290994449 Break this problem into two subproblems by setting (n + 2) equal to 1.290994449 and -1.290994449.Subproblem 1
n + 2 = 1.290994449 Simplifying n + 2 = 1.290994449 Reorder the terms: 2 + n = 1.290994449 Solving 2 + n = 1.290994449 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + n = 1.290994449 + -2 Combine like terms: 2 + -2 = 0 0 + n = 1.290994449 + -2 n = 1.290994449 + -2 Combine like terms: 1.290994449 + -2 = -0.709005551 n = -0.709005551 Simplifying n = -0.709005551Subproblem 2
n + 2 = -1.290994449 Simplifying n + 2 = -1.290994449 Reorder the terms: 2 + n = -1.290994449 Solving 2 + n = -1.290994449 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + n = -1.290994449 + -2 Combine like terms: 2 + -2 = 0 0 + n = -1.290994449 + -2 n = -1.290994449 + -2 Combine like terms: -1.290994449 + -2 = -3.290994449 n = -3.290994449 Simplifying n = -3.290994449Solution
The solution to the problem is based on the solutions from the subproblems. n = {-0.709005551, -3.290994449}
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