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Simplifying 5x + 20x2 + -10x3 = 0 Solving 5x + 20x2 + -10x3 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '5x'. 5x(1 + 4x + -2x2) = 0 Ignore the factor 5.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 + 4x + -2x2)' equal to zero and attempt to solve: Simplifying 1 + 4x + -2x2 = 0 Solving 1 + 4x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -0.5 + -2x + x2 = 0 Move the constant term to the right: Add '0.5' to each side of the equation. -0.5 + -2x + 0.5 + x2 = 0 + 0.5 Reorder the terms: -0.5 + 0.5 + -2x + x2 = 0 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + -2x + x2 = 0 + 0.5 -2x + x2 = 0 + 0.5 Combine like terms: 0 + 0.5 = 0.5 -2x + x2 = 0.5 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = 0.5 + 1 Reorder the terms: 1 + -2x + x2 = 0.5 + 1 Combine like terms: 0.5 + 1 = 1.5 1 + -2x + x2 = 1.5 Factor a perfect square on the left side: (x + -1)(x + -1) = 1.5 Calculate the square root of the right side: 1.224744871 Break this problem into two subproblems by setting (x + -1) equal to 1.224744871 and -1.224744871.Subproblem 1
x + -1 = 1.224744871 Simplifying x + -1 = 1.224744871 Reorder the terms: -1 + x = 1.224744871 Solving -1 + x = 1.224744871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 1.224744871 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.224744871 + 1 x = 1.224744871 + 1 Combine like terms: 1.224744871 + 1 = 2.224744871 x = 2.224744871 Simplifying x = 2.224744871Subproblem 2
x + -1 = -1.224744871 Simplifying x + -1 = -1.224744871 Reorder the terms: -1 + x = -1.224744871 Solving -1 + x = -1.224744871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -1.224744871 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.224744871 + 1 x = -1.224744871 + 1 Combine like terms: -1.224744871 + 1 = -0.224744871 x = -0.224744871 Simplifying x = -0.224744871Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.224744871, -0.224744871}Solution
x = {0, 2.224744871, -0.224744871}
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