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Simplifying 4x4 + -20x3 + 15x2 = 0 Reorder the terms: 15x2 + -20x3 + 4x4 = 0 Solving 15x2 + -20x3 + 4x4 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), 'x2'. x2(15 + -20x + 4x2) = 0Subproblem 1
Set the factor 'x2' equal to zero and attempt to solve: Simplifying x2 = 0 Solving x2 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x2 = 0 Take the square root of each side: x = {0}Subproblem 2
Set the factor '(15 + -20x + 4x2)' equal to zero and attempt to solve: Simplifying 15 + -20x + 4x2 = 0 Solving 15 + -20x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 3.75 + -5x + x2 = 0 Move the constant term to the right: Add '-3.75' to each side of the equation. 3.75 + -5x + -3.75 + x2 = 0 + -3.75 Reorder the terms: 3.75 + -3.75 + -5x + x2 = 0 + -3.75 Combine like terms: 3.75 + -3.75 = 0.00 0.00 + -5x + x2 = 0 + -3.75 -5x + x2 = 0 + -3.75 Combine like terms: 0 + -3.75 = -3.75 -5x + x2 = -3.75 The x term is -5x. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5x + 6.25 + x2 = -3.75 + 6.25 Reorder the terms: 6.25 + -5x + x2 = -3.75 + 6.25 Combine like terms: -3.75 + 6.25 = 2.5 6.25 + -5x + x2 = 2.5 Factor a perfect square on the left side: (x + -2.5)(x + -2.5) = 2.5 Calculate the square root of the right side: 1.58113883 Break this problem into two subproblems by setting (x + -2.5) equal to 1.58113883 and -1.58113883.Subproblem 1
x + -2.5 = 1.58113883 Simplifying x + -2.5 = 1.58113883 Reorder the terms: -2.5 + x = 1.58113883 Solving -2.5 + x = 1.58113883 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 1.58113883 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 1.58113883 + 2.5 x = 1.58113883 + 2.5 Combine like terms: 1.58113883 + 2.5 = 4.08113883 x = 4.08113883 Simplifying x = 4.08113883Subproblem 2
x + -2.5 = -1.58113883 Simplifying x + -2.5 = -1.58113883 Reorder the terms: -2.5 + x = -1.58113883 Solving -2.5 + x = -1.58113883 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -1.58113883 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -1.58113883 + 2.5 x = -1.58113883 + 2.5 Combine like terms: -1.58113883 + 2.5 = 0.91886117 x = 0.91886117 Simplifying x = 0.91886117Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.08113883, 0.91886117}Solution
x = {0, 4.08113883, 0.91886117}
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