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Mathematics 21 Online
OpenStudy (anonymous):

Someone tell me whether I'm right or not. D:

OpenStudy (anonymous):

OpenStudy (anonymous):

the answer would be option b. (a+b)(a-b)= axa -bxb (basically square of each number, LOL i haven't figured out how to right square yet :D)

OpenStudy (anonymous):

write*

OpenStudy (anonymous):

Why is it negative though? That's what I don't get. Both of the numbers are positive..

OpenStudy (anonymous):

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