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If (a+b)^2=10, if ab=-2 calculate a^2+b^2​
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If (a+b)^2=10, if ab=-2 calculate a^2+b^2​

User Mecca
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9 votes

Answer:

a^2+b^2=(a+b)²-2ab=10-2×-2=10+4=14(here -×-=+)

User Sean Powell
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