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Mathematics 15 Online
OpenStudy (anonymous):

does any one know the answer to this Which of the following are identities?

OpenStudy (anonymous):

OpenStudy (anonymous):

first is rigth

OpenStudy (anonymous):

second too

OpenStudy (anonymous):

it might just be those two right ?

OpenStudy (anonymous):

third wrong

OpenStudy (anonymous):

fourth is right

OpenStudy (anonymous):

thanks a lot

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