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Se x^2+y^2=12 e xy=9, qual é o valor de (x+y)^2?
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Se x^2+y^2=12 e xy=9, qual é o valor de (x+y)^2?

User Assaqqaf
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I hope this helps you
Se x^2+y^2=12 e xy=9, qual é o valor de (x+y)^2?-example-1
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