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OpenStudy (anonymous):
Find the product mentally. (2j + 7)(2j - 7) A.4j2 + 49 B.4j2 - 49 C.2j2 - 28j - 49 __ I think the answer is "A" Am I correct?
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OpenStudy (the_fizicx99):
Mentally, I'm pretty sure it's B. Sooo ;)
OpenStudy (anonymous):
Agreed ^^^^
OpenStudy (anonymous):
ok thanks :)
OpenStudy (the_fizicx99):
:3
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