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Simplifying x(x + -4) = -1440 Reorder the terms: x(-4 + x) = -1440 (-4 * x + x * x) = -1440 (-4x + x2) = -1440 Solving -4x + x2 = -1440 Solving for variable 'x'. Reorder the terms: 1440 + -4x + x2 = -1440 + 1440 Combine like terms: -1440 + 1440 = 0 1440 + -4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-1440' to each side of the equation. 1440 + -4x + -1440 + x2 = 0 + -1440 Reorder the terms: 1440 + -1440 + -4x + x2 = 0 + -1440 Combine like terms: 1440 + -1440 = 0 0 + -4x + x2 = 0 + -1440 -4x + x2 = 0 + -1440 Combine like terms: 0 + -1440 = -1440 -4x + x2 = -1440 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = -1440 + 4 Reorder the terms: 4 + -4x + x2 = -1440 + 4 Combine like terms: -1440 + 4 = -1436 4 + -4x + x2 = -1436 Factor a perfect square on the left side: (x + -2)(x + -2) = -1436 Can't calculate square root of the right side. The solution to this equation could not be determined.
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