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Simplifying 3x2 + 4x = 3x * 3x + -1 * 1 + -2x2 Reorder the terms: 4x + 3x2 = 3x * 3x + -1 * 1 + -2x2 Reorder the terms for easier multiplication: 4x + 3x2 = 3 * 3x * x + -1 * 1 + -2x2 Multiply 3 * 3 4x + 3x2 = 9x * x + -1 * 1 + -2x2 Multiply x * x 4x + 3x2 = 9x2 + -1 * 1 + -2x2 Multiply -1 * 1 4x + 3x2 = 9x2 + -1 + -2x2 Reorder the terms: 4x + 3x2 = -1 + 9x2 + -2x2 Combine like terms: 9x2 + -2x2 = 7x2 4x + 3x2 = -1 + 7x2 Solving 4x + 3x2 = -1 + 7x2 Solving for variable 'x'. Reorder the terms: 1 + 4x + 3x2 + -7x2 = -1 + 7x2 + 1 + -7x2 Combine like terms: 3x2 + -7x2 = -4x2 1 + 4x + -4x2 = -1 + 7x2 + 1 + -7x2 Reorder the terms: 1 + 4x + -4x2 = -1 + 1 + 7x2 + -7x2 Combine like terms: -1 + 1 = 0 1 + 4x + -4x2 = 0 + 7x2 + -7x2 1 + 4x + -4x2 = 7x2 + -7x2 Combine like terms: 7x2 + -7x2 = 0 1 + 4x + -4x2 = 0 Begin completing the square. Divide all terms by -4 the coefficient of the squared term: Divide each side by '-4'. -0.25 + -1x + x2 = 0 Move the constant term to the right: Add '0.25' to each side of the equation. -0.25 + -1x + 0.25 + x2 = 0 + 0.25 Reorder the terms: -0.25 + 0.25 + -1x + x2 = 0 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + -1x + x2 = 0 + 0.25 -1x + x2 = 0 + 0.25 Combine like terms: 0 + 0.25 = 0.25 -1x + x2 = 0.25 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 = 0.25 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 0.25 + 0.25 Combine like terms: 0.25 + 0.25 = 0.5 0.25 + -1x + x2 = 0.5 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 0.5 Calculate the square root of the right side: 0.707106781 Break this problem into two subproblems by setting (x + -0.5) equal to 0.707106781 and -0.707106781.Subproblem 1
x + -0.5 = 0.707106781 Simplifying x + -0.5 = 0.707106781 Reorder the terms: -0.5 + x = 0.707106781 Solving -0.5 + x = 0.707106781 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 0.707106781 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 0.707106781 + 0.5 x = 0.707106781 + 0.5 Combine like terms: 0.707106781 + 0.5 = 1.207106781 x = 1.207106781 Simplifying x = 1.207106781Subproblem 2
x + -0.5 = -0.707106781 Simplifying x + -0.5 = -0.707106781 Reorder the terms: -0.5 + x = -0.707106781 Solving -0.5 + x = -0.707106781 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -0.707106781 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -0.707106781 + 0.5 x = -0.707106781 + 0.5 Combine like terms: -0.707106781 + 0.5 = -0.207106781 x = -0.207106781 Simplifying x = -0.207106781Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.207106781, -0.207106781}
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