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Simplifying 5y2 + -5y + 20 = 0 Reorder the terms: 20 + -5y + 5y2 = 0 Solving 20 + -5y + 5y2 = 0 Solving for variable 'y'. Factor out the Greatest Common Factor (GCF), '5'. 5(4 + -1y + y2) = 0 Ignore the factor 5.Subproblem 1
Set the factor '(4 + -1y + y2)' equal to zero and attempt to solve: Simplifying 4 + -1y + y2 = 0 Solving 4 + -1y + y2 = 0 Begin completing the square. Move the constant term to the right: Add '-4' to each side of the equation. 4 + -1y + -4 + y2 = 0 + -4 Reorder the terms: 4 + -4 + -1y + y2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1y + y2 = 0 + -4 -1y + y2 = 0 + -4 Combine like terms: 0 + -4 = -4 -1y + y2 = -4 The y term is -1y. 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. -1y + 0.25 + y2 = -4 + 0.25 Reorder the terms: 0.25 + -1y + y2 = -4 + 0.25 Combine like terms: -4 + 0.25 = -3.75 0.25 + -1y + y2 = -3.75 Factor a perfect square on the left side: (y + -0.5)(y + -0.5) = -3.75 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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