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Simplifying (n + 7)(n + 4) = 0 Reorder the terms: (7 + n)(n + 4) = 0 Reorder the terms: (7 + n)(4 + n) = 0 Multiply (7 + n) * (4 + n) (7(4 + n) + n(4 + n)) = 0 ((4 * 7 + n * 7) + n(4 + n)) = 0 ((28 + 7n) + n(4 + n)) = 0 (28 + 7n + (4 * n + n * n)) = 0 (28 + 7n + (4n + n2)) = 0 Combine like terms: 7n + 4n = 11n (28 + 11n + n2) = 0 Solving 28 + 11n + n2 = 0 Solving for variable 'n'. Factor a trinomial. (7 + n)(4 + n) = 0Subproblem 1
Set the factor '(7 + n)' equal to zero and attempt to solve: Simplifying 7 + n = 0 Solving 7 + n = 0 Move all terms containing n to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + n = 0 + -7 Combine like terms: 7 + -7 = 0 0 + n = 0 + -7 n = 0 + -7 Combine like terms: 0 + -7 = -7 n = -7 Simplifying n = -7Subproblem 2
Set the factor '(4 + n)' equal to zero and attempt to solve: Simplifying 4 + n = 0 Solving 4 + n = 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 + n = 0 + -4 Combine like terms: 4 + -4 = 0 0 + n = 0 + -4 n = 0 + -4 Combine like terms: 0 + -4 = -4 n = -4 Simplifying n = -4Solution
n = {-7, -4}
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