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Simplifying 8n2 + -16n + -55 = 9 Reorder the terms: -55 + -16n + 8n2 = 9 Solving -55 + -16n + 8n2 = 9 Solving for variable 'n'. Reorder the terms: -55 + -9 + -16n + 8n2 = 9 + -9 Combine like terms: -55 + -9 = -64 -64 + -16n + 8n2 = 9 + -9 Combine like terms: 9 + -9 = 0 -64 + -16n + 8n2 = 0 Factor out the Greatest Common Factor (GCF), '8'. 8(-8 + -2n + n2) = 0 Factor a trinomial. 8((-2 + -1n)(4 + -1n)) = 0 Ignore the factor 8.Subproblem 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 '(4 + -1n)' equal to zero and attempt to solve: Simplifying 4 + -1n = 0 Solving 4 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1n = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1n = 0 + -4 -1n = 0 + -4 Combine like terms: 0 + -4 = -4 -1n = -4 Divide each side by '-1'. n = 4 Simplifying n = 4Solution
n = {-2, 4}
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