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Simplifying (7x2 + -6x + -1) + (2x2 + -5x + 7) + -1(x2 + -3x + -2) = 0 Reorder the terms: (-1 + -6x + 7x2) + (2x2 + -5x + 7) + -1(x2 + -3x + -2) = 0 Remove parenthesis around (-1 + -6x + 7x2) -1 + -6x + 7x2 + (2x2 + -5x + 7) + -1(x2 + -3x + -2) = 0 Reorder the terms: -1 + -6x + 7x2 + (7 + -5x + 2x2) + -1(x2 + -3x + -2) = 0 Remove parenthesis around (7 + -5x + 2x2) -1 + -6x + 7x2 + 7 + -5x + 2x2 + -1(x2 + -3x + -2) = 0 Reorder the terms: -1 + -6x + 7x2 + 7 + -5x + 2x2 + -1(-2 + -3x + x2) = 0 -1 + -6x + 7x2 + 7 + -5x + 2x2 + (-2 * -1 + -3x * -1 + x2 * -1) = 0 -1 + -6x + 7x2 + 7 + -5x + 2x2 + (2 + 3x + -1x2) = 0 Reorder the terms: -1 + 7 + 2 + -6x + -5x + 3x + 7x2 + 2x2 + -1x2 = 0 Combine like terms: -1 + 7 = 6 6 + 2 + -6x + -5x + 3x + 7x2 + 2x2 + -1x2 = 0 Combine like terms: 6 + 2 = 8 8 + -6x + -5x + 3x + 7x2 + 2x2 + -1x2 = 0 Combine like terms: -6x + -5x = -11x 8 + -11x + 3x + 7x2 + 2x2 + -1x2 = 0 Combine like terms: -11x + 3x = -8x 8 + -8x + 7x2 + 2x2 + -1x2 = 0 Combine like terms: 7x2 + 2x2 = 9x2 8 + -8x + 9x2 + -1x2 = 0 Combine like terms: 9x2 + -1x2 = 8x2 8 + -8x + 8x2 = 0 Solving 8 + -8x + 8x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '8'. 8(1 + -1x + x2) = 0 Ignore the factor 8.Subproblem 1
Set the factor '(1 + -1x + x2)' equal to zero and attempt to solve: Simplifying 1 + -1x + x2 = 0 Solving 1 + -1x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-1' to each side of the equation. 1 + -1x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + -1x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x + x2 = 0 + -1 -1x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -1x + x2 = -1 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 = -1 + 0.25 Reorder the terms: 0.25 + -1x + x2 = -1 + 0.25 Combine like terms: -1 + 0.25 = -0.75 0.25 + -1x + x2 = -0.75 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = -0.75 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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