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Simplifying -5x(2x + -1) = 3(x + 4) Reorder the terms: -5x(-1 + 2x) = 3(x + 4) (-1 * -5x + 2x * -5x) = 3(x + 4) (5x + -10x2) = 3(x + 4) Reorder the terms: 5x + -10x2 = 3(4 + x) 5x + -10x2 = (4 * 3 + x * 3) 5x + -10x2 = (12 + 3x) Solving 5x + -10x2 = 12 + 3x Solving for variable 'x'. Reorder the terms: -12 + 5x + -3x + -10x2 = 12 + 3x + -12 + -3x Combine like terms: 5x + -3x = 2x -12 + 2x + -10x2 = 12 + 3x + -12 + -3x Reorder the terms: -12 + 2x + -10x2 = 12 + -12 + 3x + -3x Combine like terms: 12 + -12 = 0 -12 + 2x + -10x2 = 0 + 3x + -3x -12 + 2x + -10x2 = 3x + -3x Combine like terms: 3x + -3x = 0 -12 + 2x + -10x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-6 + x + -5x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-6 + x + -5x2)' equal to zero and attempt to solve: Simplifying -6 + x + -5x2 = 0 Solving -6 + x + -5x2 = 0 Begin completing the square. Divide all terms by -5 the coefficient of the squared term: Divide each side by '-5'. 1.2 + -0.2x + x2 = 0 Move the constant term to the right: Add '-1.2' to each side of the equation. 1.2 + -0.2x + -1.2 + x2 = 0 + -1.2 Reorder the terms: 1.2 + -1.2 + -0.2x + x2 = 0 + -1.2 Combine like terms: 1.2 + -1.2 = 0.0 0.0 + -0.2x + x2 = 0 + -1.2 -0.2x + x2 = 0 + -1.2 Combine like terms: 0 + -1.2 = -1.2 -0.2x + x2 = -1.2 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -0.2x + 0.25 + x2 = -1.2 + 0.25 Reorder the terms: 0.25 + -0.2x + x2 = -1.2 + 0.25 Combine like terms: -1.2 + 0.25 = -0.95 0.25 + -0.2x + x2 = -0.95 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -0.95 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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