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Simplifying 118 = -16x2 + 80x Reorder the terms: 118 = 80x + -16x2 Solving 118 = 80x + -16x2 Solving for variable 'x'. Reorder the terms: 118 + -80x + 16x2 = 80x + -80x + -16x2 + 16x2 Combine like terms: 80x + -80x = 0 118 + -80x + 16x2 = 0 + -16x2 + 16x2 118 + -80x + 16x2 = -16x2 + 16x2 Combine like terms: -16x2 + 16x2 = 0 118 + -80x + 16x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(59 + -40x + 8x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(59 + -40x + 8x2)' equal to zero and attempt to solve: Simplifying 59 + -40x + 8x2 = 0 Solving 59 + -40x + 8x2 = 0 Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. 7.375 + -5x + x2 = 0 Move the constant term to the right: Add '-7.375' to each side of the equation. 7.375 + -5x + -7.375 + x2 = 0 + -7.375 Reorder the terms: 7.375 + -7.375 + -5x + x2 = 0 + -7.375 Combine like terms: 7.375 + -7.375 = 0.000 0.000 + -5x + x2 = 0 + -7.375 -5x + x2 = 0 + -7.375 Combine like terms: 0 + -7.375 = -7.375 -5x + x2 = -7.375 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 = -7.375 + 6.25 Reorder the terms: 6.25 + -5x + x2 = -7.375 + 6.25 Combine like terms: -7.375 + 6.25 = -1.125 6.25 + -5x + x2 = -1.125 Factor a perfect square on the left side: (x + -2.5)(x + -2.5) = -1.125 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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