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Simplifying -1x2 + -2x + 8 = 2x2 + -8x + 16 Reorder the terms: 8 + -2x + -1x2 = 2x2 + -8x + 16 Reorder the terms: 8 + -2x + -1x2 = 16 + -8x + 2x2 Solving 8 + -2x + -1x2 = 16 + -8x + 2x2 Solving for variable 'x'. Reorder the terms: 8 + -16 + -2x + 8x + -1x2 + -2x2 = 16 + -8x + 2x2 + -16 + 8x + -2x2 Combine like terms: 8 + -16 = -8 -8 + -2x + 8x + -1x2 + -2x2 = 16 + -8x + 2x2 + -16 + 8x + -2x2 Combine like terms: -2x + 8x = 6x -8 + 6x + -1x2 + -2x2 = 16 + -8x + 2x2 + -16 + 8x + -2x2 Combine like terms: -1x2 + -2x2 = -3x2 -8 + 6x + -3x2 = 16 + -8x + 2x2 + -16 + 8x + -2x2 Reorder the terms: -8 + 6x + -3x2 = 16 + -16 + -8x + 8x + 2x2 + -2x2 Combine like terms: 16 + -16 = 0 -8 + 6x + -3x2 = 0 + -8x + 8x + 2x2 + -2x2 -8 + 6x + -3x2 = -8x + 8x + 2x2 + -2x2 Combine like terms: -8x + 8x = 0 -8 + 6x + -3x2 = 0 + 2x2 + -2x2 -8 + 6x + -3x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 -8 + 6x + -3x2 = 0 Begin completing the square. Divide all terms by -3 the coefficient of the squared term: Divide each side by '-3'. 2.666666667 + -2x + x2 = 0 Move the constant term to the right: Add '-2.666666667' to each side of the equation. 2.666666667 + -2x + -2.666666667 + x2 = 0 + -2.666666667 Reorder the terms: 2.666666667 + -2.666666667 + -2x + x2 = 0 + -2.666666667 Combine like terms: 2.666666667 + -2.666666667 = 0.000000000 0.000000000 + -2x + x2 = 0 + -2.666666667 -2x + x2 = 0 + -2.666666667 Combine like terms: 0 + -2.666666667 = -2.666666667 -2x + x2 = -2.666666667 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 = -2.666666667 + 1 Reorder the terms: 1 + -2x + x2 = -2.666666667 + 1 Combine like terms: -2.666666667 + 1 = -1.666666667 1 + -2x + x2 = -1.666666667 Factor a perfect square on the left side: (x + -1)(x + -1) = -1.666666667 Can't calculate square root of the right side. The solution to this equation could not be determined.
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