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Simplifying n(n + 1) = 156 Reorder the terms: n(1 + n) = 156 (1 * n + n * n) = 156 (1n + n2) = 156 Solving 1n + n2 = 156 Solving for variable 'n'. Reorder the terms: -156 + 1n + n2 = 156 + -156 Combine like terms: 156 + -156 = 0 -156 + 1n + n2 = 0 Factor a trinomial. (-13 + -1n)(12 + -1n) = 0Subproblem 1
Set the factor '(-13 + -1n)' equal to zero and attempt to solve: Simplifying -13 + -1n = 0 Solving -13 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + -1n = 0 + 13 Combine like terms: -13 + 13 = 0 0 + -1n = 0 + 13 -1n = 0 + 13 Combine like terms: 0 + 13 = 13 -1n = 13 Divide each side by '-1'. n = -13 Simplifying n = -13Subproblem 2
Set the factor '(12 + -1n)' equal to zero and attempt to solve: Simplifying 12 + -1n = 0 Solving 12 + -1n = 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 + -1n = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -1n = 0 + -12 -1n = 0 + -12 Combine like terms: 0 + -12 = -12 -1n = -12 Divide each side by '-1'. n = 12 Simplifying n = 12Solution
n = {-13, 12}
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