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Simplifying x2 + 2x2 + -1x = 2x2 + -8 Reorder the terms: -1x + x2 + 2x2 = 2x2 + -8 Combine like terms: x2 + 2x2 = 3x2 -1x + 3x2 = 2x2 + -8 Reorder the terms: -1x + 3x2 = -8 + 2x2 Solving -1x + 3x2 = -8 + 2x2 Solving for variable 'x'. Reorder the terms: 8 + -1x + 3x2 + -2x2 = -8 + 2x2 + 8 + -2x2 Combine like terms: 3x2 + -2x2 = 1x2 8 + -1x + 1x2 = -8 + 2x2 + 8 + -2x2 Reorder the terms: 8 + -1x + 1x2 = -8 + 8 + 2x2 + -2x2 Combine like terms: -8 + 8 = 0 8 + -1x + 1x2 = 0 + 2x2 + -2x2 8 + -1x + 1x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 8 + -1x + 1x2 = 0 Begin completing the square. Move the constant term to the right: Add '-8' to each side of the equation. 8 + -1x + -8 + x2 = 0 + -8 Reorder the terms: 8 + -8 + -1x + x2 = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x + x2 = 0 + -8 -1x + x2 = 0 + -8 Combine like terms: 0 + -8 = -8 -1x + x2 = -8 The x term is -1x. 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. -1x + 0.25 + x2 = -8 + 0.25 Reorder the terms: 0.25 + -1x + x2 = -8 + 0.25 Combine like terms: -8 + 0.25 = -7.75 0.25 + -1x + x2 = -7.75 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = -7.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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