SOLUTION: What Is The Product Of (2 - The Square Root Of 7) &Its Conjugate

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Question 551071: What Is The Product Of (2 - The Square Root Of 7) &Its Conjugate
Answer by Alan3354(69443) About Me  (Show Source):
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What Is The Product Of (2 - The Square Root Of 7) &Its Conjugate
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= 2%5E2+-+%28sqrt%287%29%29%5E2+=+4-7
= -3