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OpenStudy (anonymous):
(2 square root of 2 +1)(square root of 2 minus 1)
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OpenStudy (anonymous):
\[(2 \sqrt{2}+1)(\sqrt{2}-1)\]
geerky42 (geerky42):
Have you ever hear of FOIL method?
OpenStudy (anonymous):
yeah, did that. got it wrong
OpenStudy (anonymous):
i got 2\[\sqrt{2}\]
geerky42 (geerky42):
You used FOIL incorrectly. Try again.
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