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hey all, does anyone have the 4 unit cambridge worked solutions ? my cousin says his teacher gave em to him when he was at school but he does not have them anymore theyd be much appreciated if anyone could tell me where to find them or if anyone has em cheers

far out.. this questions got me wrappedround.. and i think its really simple too If Z is a complex number such that Z + 1/z is real, prove that either Im(z) = 0 or |z| =1

hey, my business papers comin up soon and im having trouble planning for the extended respose question. My teacher says its gonna be a business report, dont know what its gonna be about but :S has anyone got any tips or past questions that might help me thanks