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Fill in the blank to make a perfect square y^2-12y+?

Fill in the blank to make a perfect square y^2-12y+?
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Fill in the blank to make a perfect square y^2-12y+?

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User Richard Grossman
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1 Answer

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A\ perfect\ square:(a-b)^2=a^2-2ab+b^2\\\\y^2-12y+?\\\\y^2-2y\cdot6+?\\\\\boxed{y^2-2y\cdot6+6^2=y^2-12y+36}=(y-6)^2
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User Djolf
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