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Mathematics 15 Online
OpenStudy (anonymous):

hi help please i will make myself your fan and give you medals (a + b - c)(a + b + c) i got -c^2+b^2+2ab+a^2

OpenStudy (agent0smith):

teamakesmepee? hahaha just multiply everything out... |dw:1396924254447:dw| and do the same with the c...

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