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Mathematics 15 Online
OpenStudy (anonymous):

Can someone check these two for me!? MEDAL will be given to first response! PLEASE! I've been waiting an hour :(

OpenStudy (binary3i):

sorry first one is correct second one i doubt. what kind of symmetry you want?

OpenStudy (binary3i):

i think second one should also be true

OpenStudy (binary3i):

sorry for being late

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