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Simplifying -1n(3n + 4n) = 28 Combine like terms: 3n + 4n = 7n -1n(7n) = 28 Remove parenthesis around (7n) -1n * 7n = 28 Reorder the terms for easier multiplication: -1 * 7n * n = 28 Multiply -1 * 7 -7n * n = 28 Multiply n * n -7n2 = 28 Solving -7n2 = 28 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Divide each side by '-7'. n2 = -4 Simplifying n2 = -4 Reorder the terms: 4 + n2 = -4 + 4 Combine like terms: -4 + 4 = 0 4 + n2 = 0 The solution to this equation could not be determined.
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