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Simplifying 8x + -1 = 8x3 + -12x2 + 6x + -1 Reorder the terms: -1 + 8x = 8x3 + -12x2 + 6x + -1 Reorder the terms: -1 + 8x = -1 + 6x + -12x2 + 8x3 Add '1' to each side of the equation. -1 + 1 + 8x = -1 + 6x + -12x2 + 1 + 8x3 Combine like terms: -1 + 1 = 0 0 + 8x = -1 + 6x + -12x2 + 1 + 8x3 8x = -1 + 6x + -12x2 + 1 + 8x3 Reorder the terms: 8x = -1 + 1 + 6x + -12x2 + 8x3 Combine like terms: -1 + 1 = 0 8x = 0 + 6x + -12x2 + 8x3 8x = 6x + -12x2 + 8x3 Solving 8x = 6x + -12x2 + 8x3 Solving for variable 'x'. Combine like terms: 8x + -6x = 2x 2x + 12x2 + -8x3 = 6x + -12x2 + 8x3 + -6x + 12x2 + -8x3 Reorder the terms: 2x + 12x2 + -8x3 = 6x + -6x + -12x2 + 12x2 + 8x3 + -8x3 Combine like terms: 6x + -6x = 0 2x + 12x2 + -8x3 = 0 + -12x2 + 12x2 + 8x3 + -8x3 2x + 12x2 + -8x3 = -12x2 + 12x2 + 8x3 + -8x3 Combine like terms: -12x2 + 12x2 = 0 2x + 12x2 + -8x3 = 0 + 8x3 + -8x3 2x + 12x2 + -8x3 = 8x3 + -8x3 Combine like terms: 8x3 + -8x3 = 0 2x + 12x2 + -8x3 = 0 Factor out the Greatest Common Factor (GCF), '2x'. 2x(1 + 6x + -4x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
Set the factor '(1 + 6x + -4x2)' equal to zero and attempt to solve: Simplifying 1 + 6x + -4x2 = 0 Solving 1 + 6x + -4x2 = 0 Begin completing the square. Divide all terms by -4 the coefficient of the squared term: Divide each side by '-4'. -0.25 + -1.5x + x2 = 0 Move the constant term to the right: Add '0.25' to each side of the equation. -0.25 + -1.5x + 0.25 + x2 = 0 + 0.25 Reorder the terms: -0.25 + 0.25 + -1.5x + x2 = 0 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + -1.5x + x2 = 0 + 0.25 -1.5x + x2 = 0 + 0.25 Combine like terms: 0 + 0.25 = 0.25 -1.5x + x2 = 0.25 The x term is -1.5x. Take half its coefficient (-0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. -1.5x + 0.5625 + x2 = 0.25 + 0.5625 Reorder the terms: 0.5625 + -1.5x + x2 = 0.25 + 0.5625 Combine like terms: 0.25 + 0.5625 = 0.8125 0.5625 + -1.5x + x2 = 0.8125 Factor a perfect square on the left side: (x + -0.75)(x + -0.75) = 0.8125 Calculate the square root of the right side: 0.901387819 Break this problem into two subproblems by setting (x + -0.75) equal to 0.901387819 and -0.901387819.Subproblem 1
x + -0.75 = 0.901387819 Simplifying x + -0.75 = 0.901387819 Reorder the terms: -0.75 + x = 0.901387819 Solving -0.75 + x = 0.901387819 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 0.901387819 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 0.901387819 + 0.75 x = 0.901387819 + 0.75 Combine like terms: 0.901387819 + 0.75 = 1.651387819 x = 1.651387819 Simplifying x = 1.651387819Subproblem 2
x + -0.75 = -0.901387819 Simplifying x + -0.75 = -0.901387819 Reorder the terms: -0.75 + x = -0.901387819 Solving -0.75 + x = -0.901387819 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -0.901387819 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -0.901387819 + 0.75 x = -0.901387819 + 0.75 Combine like terms: -0.901387819 + 0.75 = -0.151387819 x = -0.151387819 Simplifying x = -0.151387819Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.651387819, -0.151387819}Solution
x = {0, 1.651387819, -0.151387819}
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