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Simplifying -9n2 + -2n + 7 = 0 Reorder the terms: 7 + -2n + -9n2 = 0 Solving 7 + -2n + -9n2 = 0 Solving for variable 'n'. Factor a trinomial. (7 + -9n)(1 + n) = 0Subproblem 1
Set the factor '(7 + -9n)' equal to zero and attempt to solve: Simplifying 7 + -9n = 0 Solving 7 + -9n = 0 Move all terms containing n to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -9n = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -9n = 0 + -7 -9n = 0 + -7 Combine like terms: 0 + -7 = -7 -9n = -7 Divide each side by '-9'. n = 0.7777777778 Simplifying n = 0.7777777778Subproblem 2
Set the factor '(1 + n)' equal to zero and attempt to solve: Simplifying 1 + n = 0 Solving 1 + n = 0 Move all terms containing n to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + n = 0 + -1 Combine like terms: 1 + -1 = 0 0 + n = 0 + -1 n = 0 + -1 Combine like terms: 0 + -1 = -1 n = -1 Simplifying n = -1Solution
n = {0.7777777778, -1}
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