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Simplifying 2x3 + 4x2 = 9x Reorder the terms: 4x2 + 2x3 = 9x Solving 4x2 + 2x3 = 9x Solving for variable 'x'. Reorder the terms: -9x + 4x2 + 2x3 = 9x + -9x Combine like terms: 9x + -9x = 0 -9x + 4x2 + 2x3 = 0 Factor out the Greatest Common Factor (GCF), 'x'. x(-9 + 4x + 2x2) = 0Subproblem 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 '(-9 + 4x + 2x2)' equal to zero and attempt to solve: Simplifying -9 + 4x + 2x2 = 0 Solving -9 + 4x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -4.5 + 2x + x2 = 0 Move the constant term to the right: Add '4.5' to each side of the equation. -4.5 + 2x + 4.5 + x2 = 0 + 4.5 Reorder the terms: -4.5 + 4.5 + 2x + x2 = 0 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + 2x + x2 = 0 + 4.5 2x + x2 = 0 + 4.5 Combine like terms: 0 + 4.5 = 4.5 2x + x2 = 4.5 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 = 4.5 + 1 Reorder the terms: 1 + 2x + x2 = 4.5 + 1 Combine like terms: 4.5 + 1 = 5.5 1 + 2x + x2 = 5.5 Factor a perfect square on the left side: (x + 1)(x + 1) = 5.5 Calculate the square root of the right side: 2.34520788 Break this problem into two subproblems by setting (x + 1) equal to 2.34520788 and -2.34520788.Subproblem 1
x + 1 = 2.34520788 Simplifying x + 1 = 2.34520788 Reorder the terms: 1 + x = 2.34520788 Solving 1 + x = 2.34520788 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 = 2.34520788 + -1 Combine like terms: 1 + -1 = 0 0 + x = 2.34520788 + -1 x = 2.34520788 + -1 Combine like terms: 2.34520788 + -1 = 1.34520788 x = 1.34520788 Simplifying x = 1.34520788Subproblem 2
x + 1 = -2.34520788 Simplifying x + 1 = -2.34520788 Reorder the terms: 1 + x = -2.34520788 Solving 1 + x = -2.34520788 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 = -2.34520788 + -1 Combine like terms: 1 + -1 = 0 0 + x = -2.34520788 + -1 x = -2.34520788 + -1 Combine like terms: -2.34520788 + -1 = -3.34520788 x = -3.34520788 Simplifying x = -3.34520788Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.34520788, -3.34520788}Solution
x = {0, 1.34520788, -3.34520788}
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