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Simplifying -16a5 + 8a4 + -4a3 = 0 Reorder the terms: -4a3 + 8a4 + -16a5 = 0 Solving -4a3 + 8a4 + -16a5 = 0 Solving for variable 'a'. Factor out the Greatest Common Factor (GCF), '4a3'. 4a3(-1 + 2a + -4a2) = 0 Ignore the factor 4.Subproblem 1
Set the factor 'a3' equal to zero and attempt to solve: Simplifying a3 = 0 Solving a3 = 0 Move all terms containing a to the left, all other terms to the right. Simplifying a3 = 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 '(-1 + 2a + -4a2)' equal to zero and attempt to solve: Simplifying -1 + 2a + -4a2 = 0 Solving -1 + 2a + -4a2 = 0 Begin completing the square. Divide all terms by -4 the coefficient of the squared term: Divide each side by '-4'. 0.25 + -0.5a + a2 = 0 Move the constant term to the right: Add '-0.25' to each side of the equation. 0.25 + -0.5a + -0.25 + a2 = 0 + -0.25 Reorder the terms: 0.25 + -0.25 + -0.5a + a2 = 0 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + -0.5a + a2 = 0 + -0.25 -0.5a + a2 = 0 + -0.25 Combine like terms: 0 + -0.25 = -0.25 -0.5a + a2 = -0.25 The a term is -0.5a. Take half its coefficient (-0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. -0.5a + 0.0625 + a2 = -0.25 + 0.0625 Reorder the terms: 0.0625 + -0.5a + a2 = -0.25 + 0.0625 Combine like terms: -0.25 + 0.0625 = -0.1875 0.0625 + -0.5a + a2 = -0.1875 Factor a perfect square on the left side: (a + -0.25)(a + -0.25) = -0.1875 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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