You can put this solution on YOUR website! help me solve for y
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` ` ` ` (x-1)2 + y2 = 1
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Subtract (x-1)2 from both sides
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` ` ` ` `y2 = 1 - (x-1)2
Write 1 as 12
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` ` ` ` `y2 = 12 - (x-1)2
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The right side will factor as the difference of two squares:
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` ` ` ` `y2 = [1 - (x-1)][1 + (x-1)]
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Remove inner parentheses
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` ` ` ` `y2 = [1 - x + 1)(1 + x - 1]
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Combine like terms
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` ` ` ` `y2 = [2 - x][x]
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Rewrite with short factor first
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` ` ` ` `y2 = x(2-x)
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Take square roots of both sides, remembering ± on the right
` ` ` ` ` ` ` ` ______
` ` ` ` ` y = ±Öx(2-x)
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Edwin
