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Simplifying (2n + 5)(2n + -8) = 0 Reorder the terms: (5 + 2n)(2n + -8) = 0 Reorder the terms: (5 + 2n)(-8 + 2n) = 0 Multiply (5 + 2n) * (-8 + 2n) (5(-8 + 2n) + 2n * (-8 + 2n)) = 0 ((-8 * 5 + 2n * 5) + 2n * (-8 + 2n)) = 0 ((-40 + 10n) + 2n * (-8 + 2n)) = 0 (-40 + 10n + (-8 * 2n + 2n * 2n)) = 0 (-40 + 10n + (-16n + 4n2)) = 0 Combine like terms: 10n + -16n = -6n (-40 + -6n + 4n2) = 0 Solving -40 + -6n + 4n2 = 0 Solving for variable 'n'. Factor out the Greatest Common Factor (GCF), '2'. 2(-20 + -3n + 2n2) = 0 Factor a trinomial. 2((-5 + -2n)(4 + -1n)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-5 + -2n)' equal to zero and attempt to solve: Simplifying -5 + -2n = 0 Solving -5 + -2n = 0 Move all terms containing n to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -2n = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -2n = 0 + 5 -2n = 0 + 5 Combine like terms: 0 + 5 = 5 -2n = 5 Divide each side by '-2'. n = -2.5 Simplifying n = -2.5Subproblem 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 = {-2.5, 4}
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