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Simplifying 3x(4x + -1) = 6x + 19 + -4 Reorder the terms: 3x(-1 + 4x) = 6x + 19 + -4 (-1 * 3x + 4x * 3x) = 6x + 19 + -4 (-3x + 12x2) = 6x + 19 + -4 Reorder the terms: -3x + 12x2 = 19 + -4 + 6x Combine like terms: 19 + -4 = 15 -3x + 12x2 = 15 + 6x Solving -3x + 12x2 = 15 + 6x Solving for variable 'x'. Reorder the terms: -15 + -3x + -6x + 12x2 = 15 + 6x + -15 + -6x Combine like terms: -3x + -6x = -9x -15 + -9x + 12x2 = 15 + 6x + -15 + -6x Reorder the terms: -15 + -9x + 12x2 = 15 + -15 + 6x + -6x Combine like terms: 15 + -15 = 0 -15 + -9x + 12x2 = 0 + 6x + -6x -15 + -9x + 12x2 = 6x + -6x Combine like terms: 6x + -6x = 0 -15 + -9x + 12x2 = 0 Factor out the Greatest Common Factor (GCF), '3'. 3(-5 + -3x + 4x2) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(-5 + -3x + 4x2)' equal to zero and attempt to solve: Simplifying -5 + -3x + 4x2 = 0 Solving -5 + -3x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -1.25 + -0.75x + x2 = 0 Move the constant term to the right: Add '1.25' to each side of the equation. -1.25 + -0.75x + 1.25 + x2 = 0 + 1.25 Reorder the terms: -1.25 + 1.25 + -0.75x + x2 = 0 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + -0.75x + x2 = 0 + 1.25 -0.75x + x2 = 0 + 1.25 Combine like terms: 0 + 1.25 = 1.25 -0.75x + x2 = 1.25 The x term is -0.75x. Take half its coefficient (-0.375). Square it (0.140625) and add it to both sides. Add '0.140625' to each side of the equation. -0.75x + 0.140625 + x2 = 1.25 + 0.140625 Reorder the terms: 0.140625 + -0.75x + x2 = 1.25 + 0.140625 Combine like terms: 1.25 + 0.140625 = 1.390625 0.140625 + -0.75x + x2 = 1.390625 Factor a perfect square on the left side: (x + -0.375)(x + -0.375) = 1.390625 Calculate the square root of the right side: 1.179247642 Break this problem into two subproblems by setting (x + -0.375) equal to 1.179247642 and -1.179247642.Subproblem 1
x + -0.375 = 1.179247642 Simplifying x + -0.375 = 1.179247642 Reorder the terms: -0.375 + x = 1.179247642 Solving -0.375 + x = 1.179247642 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = 1.179247642 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = 1.179247642 + 0.375 x = 1.179247642 + 0.375 Combine like terms: 1.179247642 + 0.375 = 1.554247642 x = 1.554247642 Simplifying x = 1.554247642Subproblem 2
x + -0.375 = -1.179247642 Simplifying x + -0.375 = -1.179247642 Reorder the terms: -0.375 + x = -1.179247642 Solving -0.375 + x = -1.179247642 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = -1.179247642 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = -1.179247642 + 0.375 x = -1.179247642 + 0.375 Combine like terms: -1.179247642 + 0.375 = -0.804247642 x = -0.804247642 Simplifying x = -0.804247642Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.554247642, -0.804247642}Solution
x = {1.554247642, -0.804247642}
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