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Simplifying 0 = y2 + -4y + 6 Reorder the terms: 0 = 6 + -4y + y2 Solving 0 = 6 + -4y + y2 Solving for variable 'y'. Combine like terms: 0 + -6 = -6 -6 + 4y + -1y2 = 6 + -4y + y2 + -6 + 4y + -1y2 Reorder the terms: -6 + 4y + -1y2 = 6 + -6 + -4y + 4y + y2 + -1y2 Combine like terms: 6 + -6 = 0 -6 + 4y + -1y2 = 0 + -4y + 4y + y2 + -1y2 -6 + 4y + -1y2 = -4y + 4y + y2 + -1y2 Combine like terms: -4y + 4y = 0 -6 + 4y + -1y2 = 0 + y2 + -1y2 -6 + 4y + -1y2 = y2 + -1y2 Combine like terms: y2 + -1y2 = 0 -6 + 4y + -1y2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 6 + -4y + y2 = 0 Move the constant term to the right: Add '-6' to each side of the equation. 6 + -4y + -6 + y2 = 0 + -6 Reorder the terms: 6 + -6 + -4y + y2 = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -4y + y2 = 0 + -6 -4y + y2 = 0 + -6 Combine like terms: 0 + -6 = -6 -4y + y2 = -6 The y term is -4y. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4y + 4 + y2 = -6 + 4 Reorder the terms: 4 + -4y + y2 = -6 + 4 Combine like terms: -6 + 4 = -2 4 + -4y + y2 = -2 Factor a perfect square on the left side: (y + -2)(y + -2) = -2 Can't calculate square root of the right side. The solution to this equation could not be determined.
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