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Simplifying 5x4 + -4x3 + -4x2 = 0 Reorder the terms: -4x2 + -4x3 + 5x4 = 0 Solving -4x2 + -4x3 + 5x4 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), 'x2'. x2(-4 + -4x + 5x2) = 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 '(-4 + -4x + 5x2)' equal to zero and attempt to solve: Simplifying -4 + -4x + 5x2 = 0 Solving -4 + -4x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -0.8 + -0.8x + x2 = 0 Move the constant term to the right: Add '0.8' to each side of the equation. -0.8 + -0.8x + 0.8 + x2 = 0 + 0.8 Reorder the terms: -0.8 + 0.8 + -0.8x + x2 = 0 + 0.8 Combine like terms: -0.8 + 0.8 = 0.0 0.0 + -0.8x + x2 = 0 + 0.8 -0.8x + x2 = 0 + 0.8 Combine like terms: 0 + 0.8 = 0.8 -0.8x + x2 = 0.8 The x term is -0.8x. Take half its coefficient (-0.4). Square it (0.16) and add it to both sides. Add '0.16' to each side of the equation. -0.8x + 0.16 + x2 = 0.8 + 0.16 Reorder the terms: 0.16 + -0.8x + x2 = 0.8 + 0.16 Combine like terms: 0.8 + 0.16 = 0.96 0.16 + -0.8x + x2 = 0.96 Factor a perfect square on the left side: (x + -0.4)(x + -0.4) = 0.96 Calculate the square root of the right side: 0.979795897 Break this problem into two subproblems by setting (x + -0.4) equal to 0.979795897 and -0.979795897.Subproblem 1
x + -0.4 = 0.979795897 Simplifying x + -0.4 = 0.979795897 Reorder the terms: -0.4 + x = 0.979795897 Solving -0.4 + x = 0.979795897 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = 0.979795897 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = 0.979795897 + 0.4 x = 0.979795897 + 0.4 Combine like terms: 0.979795897 + 0.4 = 1.379795897 x = 1.379795897 Simplifying x = 1.379795897Subproblem 2
x + -0.4 = -0.979795897 Simplifying x + -0.4 = -0.979795897 Reorder the terms: -0.4 + x = -0.979795897 Solving -0.4 + x = -0.979795897 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = -0.979795897 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = -0.979795897 + 0.4 x = -0.979795897 + 0.4 Combine like terms: -0.979795897 + 0.4 = -0.579795897 x = -0.579795897 Simplifying x = -0.579795897Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.379795897, -0.579795897}Solution
x = {0, 1.379795897, -0.579795897}
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