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Mathematics 7 Online
OpenStudy (anonymous):

Which is the product of -√2/3+1 and its conjugate? -1/3 13/9 5/3 11/9 PLEASE help ASAP :( !

OpenStudy (tkhunny):

Utilize this principle. \((a-b)(a+b) = a^{2} - b^{2}\)

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