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Simplifying (n + 7)(n + -5) = x Reorder the terms: (7 + n)(n + -5) = x Reorder the terms: (7 + n)(-5 + n) = x Multiply (7 + n) * (-5 + n) (7(-5 + n) + n(-5 + n)) = x ((-5 * 7 + n * 7) + n(-5 + n)) = x ((-35 + 7n) + n(-5 + n)) = x (-35 + 7n + (-5 * n + n * n)) = x (-35 + 7n + (-5n + n2)) = x Combine like terms: 7n + -5n = 2n (-35 + 2n + n2) = x Solving -35 + 2n + n2 = x Solving for variable 'n'. Combine like terms: x + -1x = 0 -35 + 2n + n2 + -1x = 0 The solution to this equation could not be determined.
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