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Mathematics 20 Online
OpenStudy (sucker4math):

Factorise a^2 - 9. Workings please. And can someone tell me wheres the reply button????? I cant seem to send what I've already typed. Helpppp. Using an s4.

OpenStudy (yamyam70):

the reply button is " post "

OpenStudy (skullpatrol):

Right below this message it says "Type your reply"

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