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Simplifying (4n + -1)(n + 2) = 20n + -5 Reorder the terms: (-1 + 4n)(n + 2) = 20n + -5 Reorder the terms: (-1 + 4n)(2 + n) = 20n + -5 Multiply (-1 + 4n) * (2 + n) (-1(2 + n) + 4n * (2 + n)) = 20n + -5 ((2 * -1 + n * -1) + 4n * (2 + n)) = 20n + -5 ((-2 + -1n) + 4n * (2 + n)) = 20n + -5 (-2 + -1n + (2 * 4n + n * 4n)) = 20n + -5 (-2 + -1n + (8n + 4n2)) = 20n + -5 Combine like terms: -1n + 8n = 7n (-2 + 7n + 4n2) = 20n + -5 Reorder the terms: -2 + 7n + 4n2 = -5 + 20n Solving -2 + 7n + 4n2 = -5 + 20n Solving for variable 'n'. Reorder the terms: -2 + 5 + 7n + -20n + 4n2 = -5 + 20n + 5 + -20n Combine like terms: -2 + 5 = 3 3 + 7n + -20n + 4n2 = -5 + 20n + 5 + -20n Combine like terms: 7n + -20n = -13n 3 + -13n + 4n2 = -5 + 20n + 5 + -20n Reorder the terms: 3 + -13n + 4n2 = -5 + 5 + 20n + -20n Combine like terms: -5 + 5 = 0 3 + -13n + 4n2 = 0 + 20n + -20n 3 + -13n + 4n2 = 20n + -20n Combine like terms: 20n + -20n = 0 3 + -13n + 4n2 = 0 Factor a trinomial. (1 + -4n)(3 + -1n) = 0Subproblem 1
Set the factor '(1 + -4n)' equal to zero and attempt to solve: Simplifying 1 + -4n = 0 Solving 1 + -4n = 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 + -4n = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -4n = 0 + -1 -4n = 0 + -1 Combine like terms: 0 + -1 = -1 -4n = -1 Divide each side by '-4'. n = 0.25 Simplifying n = 0.25Subproblem 2
Set the factor '(3 + -1n)' equal to zero and attempt to solve: Simplifying 3 + -1n = 0 Solving 3 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1n = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1n = 0 + -3 -1n = 0 + -3 Combine like terms: 0 + -3 = -3 -1n = -3 Divide each side by '-1'. n = 3 Simplifying n = 3Solution
n = {0.25, 3}
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