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Simplifying 7n2 + 12n + 3 = 7 Reorder the terms: 3 + 12n + 7n2 = 7 Solving 3 + 12n + 7n2 = 7 Solving for variable 'n'. Reorder the terms: 3 + -7 + 12n + 7n2 = 7 + -7 Combine like terms: 3 + -7 = -4 -4 + 12n + 7n2 = 7 + -7 Combine like terms: 7 + -7 = 0 -4 + 12n + 7n2 = 0 Factor a trinomial. (-2 + -1n)(2 + -7n) = 0Subproblem 1
Set the factor '(-2 + -1n)' equal to zero and attempt to solve: Simplifying -2 + -1n = 0 Solving -2 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1n = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1n = 0 + 2 -1n = 0 + 2 Combine like terms: 0 + 2 = 2 -1n = 2 Divide each side by '-1'. n = -2 Simplifying n = -2Subproblem 2
Set the factor '(2 + -7n)' equal to zero and attempt to solve: Simplifying 2 + -7n = 0 Solving 2 + -7n = 0 Move all terms containing n to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -7n = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -7n = 0 + -2 -7n = 0 + -2 Combine like terms: 0 + -2 = -2 -7n = -2 Divide each side by '-7'. n = 0.2857142857 Simplifying n = 0.2857142857Solution
n = {-2, 0.2857142857}
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