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Simplifying y2 + -28y + 490 = 0 Reorder the terms: 490 + -28y + y2 = 0 Solving 490 + -28y + y2 = 0 Solving for variable 'y'. Begin completing the square. Move the constant term to the right: Add '-490' to each side of the equation. 490 + -28y + -490 + y2 = 0 + -490 Reorder the terms: 490 + -490 + -28y + y2 = 0 + -490 Combine like terms: 490 + -490 = 0 0 + -28y + y2 = 0 + -490 -28y + y2 = 0 + -490 Combine like terms: 0 + -490 = -490 -28y + y2 = -490 The y term is -28y. Take half its coefficient (-14). Square it (196) and add it to both sides. Add '196' to each side of the equation. -28y + 196 + y2 = -490 + 196 Reorder the terms: 196 + -28y + y2 = -490 + 196 Combine like terms: -490 + 196 = -294 196 + -28y + y2 = -294 Factor a perfect square on the left side: (y + -14)(y + -14) = -294 Can't calculate square root of the right side. The solution to this equation could not be determined.
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