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Simplifying 8x5 + -5x4 + -20x3 = 0 Reorder the terms: -20x3 + -5x4 + 8x5 = 0 Solving -20x3 + -5x4 + 8x5 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), 'x3'. x3(-20 + -5x + 8x2) = 0Subproblem 1
Set the factor 'x3' equal to zero and attempt to solve: Simplifying x3 = 0 Solving x3 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x3 = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.Subproblem 2
Set the factor '(-20 + -5x + 8x2)' equal to zero and attempt to solve: Simplifying -20 + -5x + 8x2 = 0 Solving -20 + -5x + 8x2 = 0 Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. -2.5 + -0.625x + x2 = 0 Move the constant term to the right: Add '2.5' to each side of the equation. -2.5 + -0.625x + 2.5 + x2 = 0 + 2.5 Reorder the terms: -2.5 + 2.5 + -0.625x + x2 = 0 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + -0.625x + x2 = 0 + 2.5 -0.625x + x2 = 0 + 2.5 Combine like terms: 0 + 2.5 = 2.5 -0.625x + x2 = 2.5 The x term is -0.625x. Take half its coefficient (-0.3125). Square it (0.09765625) and add it to both sides. Add '0.09765625' to each side of the equation. -0.625x + 0.09765625 + x2 = 2.5 + 0.09765625 Reorder the terms: 0.09765625 + -0.625x + x2 = 2.5 + 0.09765625 Combine like terms: 2.5 + 0.09765625 = 2.59765625 0.09765625 + -0.625x + x2 = 2.59765625 Factor a perfect square on the left side: (x + -0.3125)(x + -0.3125) = 2.59765625 Calculate the square root of the right side: 1.61172462 Break this problem into two subproblems by setting (x + -0.3125) equal to 1.61172462 and -1.61172462.Subproblem 1
x + -0.3125 = 1.61172462 Simplifying x + -0.3125 = 1.61172462 Reorder the terms: -0.3125 + x = 1.61172462 Solving -0.3125 + x = 1.61172462 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3125' to each side of the equation. -0.3125 + 0.3125 + x = 1.61172462 + 0.3125 Combine like terms: -0.3125 + 0.3125 = 0.0000 0.0000 + x = 1.61172462 + 0.3125 x = 1.61172462 + 0.3125 Combine like terms: 1.61172462 + 0.3125 = 1.92422462 x = 1.92422462 Simplifying x = 1.92422462Subproblem 2
x + -0.3125 = -1.61172462 Simplifying x + -0.3125 = -1.61172462 Reorder the terms: -0.3125 + x = -1.61172462 Solving -0.3125 + x = -1.61172462 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3125' to each side of the equation. -0.3125 + 0.3125 + x = -1.61172462 + 0.3125 Combine like terms: -0.3125 + 0.3125 = 0.0000 0.0000 + x = -1.61172462 + 0.3125 x = -1.61172462 + 0.3125 Combine like terms: -1.61172462 + 0.3125 = -1.29922462 x = -1.29922462 Simplifying x = -1.29922462Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.92422462, -1.29922462}Solution
x = {1.92422462, -1.29922462}
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