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Mathematics 19 Online
OpenStudy (sucker4math):

Factorise A^2 - 9 is the final ans supposed to be smth like a^2 - b^2 thats all?? And btw my page is cut off halfway at the type your reply box. Is thr an app for this?

OpenStudy (yamyam70):

difference of 2 squares, should be ( a+3) (a-3)

OpenStudy (yamyam70):

coz 9 is a perfect square

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