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Simplifying 5 + -1n(n + -4) = 3(n + 2) Reorder the terms: 5 + -1n(-4 + n) = 3(n + 2) 5 + (-4 * -1n + n * -1n) = 3(n + 2) 5 + (4n + -1n2) = 3(n + 2) Reorder the terms: 5 + 4n + -1n2 = 3(2 + n) 5 + 4n + -1n2 = (2 * 3 + n * 3) 5 + 4n + -1n2 = (6 + 3n) Solving 5 + 4n + -1n2 = 6 + 3n Solving for variable 'n'. Reorder the terms: 5 + -6 + 4n + -3n + -1n2 = 6 + 3n + -6 + -3n Combine like terms: 5 + -6 = -1 -1 + 4n + -3n + -1n2 = 6 + 3n + -6 + -3n Combine like terms: 4n + -3n = 1n -1 + 1n + -1n2 = 6 + 3n + -6 + -3n Reorder the terms: -1 + 1n + -1n2 = 6 + -6 + 3n + -3n Combine like terms: 6 + -6 = 0 -1 + 1n + -1n2 = 0 + 3n + -3n -1 + 1n + -1n2 = 3n + -3n Combine like terms: 3n + -3n = 0 -1 + 1n + -1n2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 1 + -1n + n2 = 0 Move the constant term to the right: Add '-1' to each side of the equation. 1 + -1n + -1 + n2 = 0 + -1 Reorder the terms: 1 + -1 + -1n + n2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1n + n2 = 0 + -1 -1n + n2 = 0 + -1 Combine like terms: 0 + -1 = -1 -1n + n2 = -1 The n term is -1n. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1n + 0.25 + n2 = -1 + 0.25 Reorder the terms: 0.25 + -1n + n2 = -1 + 0.25 Combine like terms: -1 + 0.25 = -0.75 0.25 + -1n + n2 = -0.75 Factor a perfect square on the left side: (n + -0.5)(n + -0.5) = -0.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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