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Fill in the blank to make the expression a perfect square?Y^2 - 2y + blank

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We need to find a perfect square from the expression


y^2-2y

In this regard, we can note that


(y-1)^2=y^2-2y+1

Then, by comparing this result with our expression, we can see that the blank space is 1 because


y^2-2y+1=\left(y-1\right)^2

Therefore, the answer is:

Fill in the blank to make the expression a perfect square?Y^2 - 2y + blank-example-1
User Mike Gledhill
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