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Simplifying (8x3 + -5x2 + -12) + -1(8x3 + -3x2 + 2x) = 0 Reorder the terms: (-12 + -5x2 + 8x3) + -1(8x3 + -3x2 + 2x) = 0 Remove parenthesis around (-12 + -5x2 + 8x3) -12 + -5x2 + 8x3 + -1(8x3 + -3x2 + 2x) = 0 Reorder the terms: -12 + -5x2 + 8x3 + -1(2x + -3x2 + 8x3) = 0 -12 + -5x2 + 8x3 + (2x * -1 + -3x2 * -1 + 8x3 * -1) = 0 -12 + -5x2 + 8x3 + (-2x + 3x2 + -8x3) = 0 Reorder the terms: -12 + -2x + -5x2 + 3x2 + 8x3 + -8x3 = 0 Combine like terms: -5x2 + 3x2 = -2x2 -12 + -2x + -2x2 + 8x3 + -8x3 = 0 Combine like terms: 8x3 + -8x3 = 0 -12 + -2x + -2x2 + 0 = 0 -12 + -2x + -2x2 = 0 Solving -12 + -2x + -2x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '-2'. -2(6 + x + x2) = 0 Ignore the factor -2.Subproblem 1
Set the factor '(6 + x + x2)' equal to zero and attempt to solve: Simplifying 6 + x + x2 = 0 Solving 6 + x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-6' to each side of the equation. 6 + x + -6 + x2 = 0 + -6 Reorder the terms: 6 + -6 + x + x2 = 0 + -6 Combine like terms: 6 + -6 = 0 0 + x + x2 = 0 + -6 x + x2 = 0 + -6 Combine like terms: 0 + -6 = -6 x + x2 = -6 The x term is x. 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. x + 0.25 + x2 = -6 + 0.25 Reorder the terms: 0.25 + x + x2 = -6 + 0.25 Combine like terms: -6 + 0.25 = -5.75 0.25 + x + x2 = -5.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -5.75 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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