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Simplifying x(x + 4) = (x + -2) * 2 Reorder the terms: x(4 + x) = (x + -2) * 2 (4 * x + x * x) = (x + -2) * 2 (4x + x2) = (x + -2) * 2 Reorder the terms: 4x + x2 = (-2 + x) * 2 Reorder the terms for easier multiplication: 4x + x2 = 2(-2 + x) 4x + x2 = (-2 * 2 + x * 2) 4x + x2 = (-4 + 2x) Solving 4x + x2 = -4 + 2x Solving for variable 'x'. Reorder the terms: 4 + 4x + -2x + x2 = -4 + 2x + 4 + -2x Combine like terms: 4x + -2x = 2x 4 + 2x + x2 = -4 + 2x + 4 + -2x Reorder the terms: 4 + 2x + x2 = -4 + 4 + 2x + -2x Combine like terms: -4 + 4 = 0 4 + 2x + x2 = 0 + 2x + -2x 4 + 2x + x2 = 2x + -2x Combine like terms: 2x + -2x = 0 4 + 2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-4' to each side of the equation. 4 + 2x + -4 + x2 = 0 + -4 Reorder the terms: 4 + -4 + 2x + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 2x + x2 = 0 + -4 2x + x2 = 0 + -4 Combine like terms: 0 + -4 = -4 2x + x2 = -4 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = -4 + 1 Reorder the terms: 1 + 2x + x2 = -4 + 1 Combine like terms: -4 + 1 = -3 1 + 2x + x2 = -3 Factor a perfect square on the left side: (x + 1)(x + 1) = -3 Can't calculate square root of the right side. The solution to this equation could not be determined.
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