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Simplifying y2 + -0.6y + 0.4 = 0 Reorder the terms: 0.4 + -0.6y + y2 = 0 Solving 0.4 + -0.6y + y2 = 0 Solving for variable 'y'. Begin completing the square. Move the constant term to the right: Add '-0.4' to each side of the equation. 0.4 + -0.6y + -0.4 + y2 = 0 + -0.4 Reorder the terms: 0.4 + -0.4 + -0.6y + y2 = 0 + -0.4 Combine like terms: 0.4 + -0.4 = 0.0 0.0 + -0.6y + y2 = 0 + -0.4 -0.6y + y2 = 0 + -0.4 Combine like terms: 0 + -0.4 = -0.4 -0.6y + y2 = -0.4 The y term is -0.6y. Take half its coefficient (-0.3). Square it (0.09) and add it to both sides. Add '0.09' to each side of the equation. -0.6y + 0.09 + y2 = -0.4 + 0.09 Reorder the terms: 0.09 + -0.6y + y2 = -0.4 + 0.09 Combine like terms: -0.4 + 0.09 = -0.31 0.09 + -0.6y + y2 = -0.31 Factor a perfect square on the left side: (y + -0.3)(y + -0.3) = -0.31 Can't calculate square root of the right side. The solution to this equation could not be determined.
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