What is the greatest possible value of $x+y$ such that $x^{2} + y^{2} =90$ and $xy=27$?
Question:
What is the greatest possible value of $x+y$ such that $x^{2} + y^{2} =90$ and $xy=27$?
Answer:
Let's think step by step.

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What is the greatest possible value of $x+y$ such that $x^{2} + y^{2} =90$ and $xy=27$?
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