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Simplifying n(n + 7) = 198 Reorder the terms: n(7 + n) = 198 (7 * n + n * n) = 198 (7n + n2) = 198 Solving 7n + n2 = 198 Solving for variable 'n'. Reorder the terms: -198 + 7n + n2 = 198 + -198 Combine like terms: 198 + -198 = 0 -198 + 7n + n2 = 0 Factor a trinomial. (-18 + -1n)(11 + -1n) = 0Subproblem 1
Set the factor '(-18 + -1n)' equal to zero and attempt to solve: Simplifying -18 + -1n = 0 Solving -18 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + -1n = 0 + 18 Combine like terms: -18 + 18 = 0 0 + -1n = 0 + 18 -1n = 0 + 18 Combine like terms: 0 + 18 = 18 -1n = 18 Divide each side by '-1'. n = -18 Simplifying n = -18Subproblem 2
Set the factor '(11 + -1n)' equal to zero and attempt to solve: Simplifying 11 + -1n = 0 Solving 11 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + -1n = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -1n = 0 + -11 -1n = 0 + -11 Combine like terms: 0 + -11 = -11 -1n = -11 Divide each side by '-1'. n = 11 Simplifying n = 11Solution
n = {-18, 11}
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