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Simplifying 180 = n(n + -3) Reorder the terms: 180 = n(-3 + n) 180 = (-3 * n + n * n) 180 = (-3n + n2) Solving 180 = -3n + n2 Solving for variable 'n'. Reorder the terms: 180 + 3n + -1n2 = -3n + 3n + n2 + -1n2 Combine like terms: -3n + 3n = 0 180 + 3n + -1n2 = 0 + n2 + -1n2 180 + 3n + -1n2 = n2 + -1n2 Combine like terms: n2 + -1n2 = 0 180 + 3n + -1n2 = 0 Factor a trinomial. (15 + -1n)(12 + n) = 0Subproblem 1
Set the factor '(15 + -1n)' equal to zero and attempt to solve: Simplifying 15 + -1n = 0 Solving 15 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -1n = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1n = 0 + -15 -1n = 0 + -15 Combine like terms: 0 + -15 = -15 -1n = -15 Divide each side by '-1'. n = 15 Simplifying n = 15Subproblem 2
Set the factor '(12 + n)' equal to zero and attempt to solve: Simplifying 12 + n = 0 Solving 12 + n = 0 Move all terms containing n to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + n = 0 + -12 Combine like terms: 12 + -12 = 0 0 + n = 0 + -12 n = 0 + -12 Combine like terms: 0 + -12 = -12 n = -12 Simplifying n = -12Solution
n = {15, -12}
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