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佢只係轉左個樣咋,睇清楚d-.-呢題唔洗30秒都搞掂 1-6題既solution...(第7條...我而家先f4,未教probability....) 1. (a+bc)(a-bc)/(b-ac)x(b-ac)^2/2(b-ac) =(a^2-b^2c^2)/2 2. 6(x+2)>=7(x+2)(x-2) (x+2)(20-7x)> ... Soldier 發表於 16-4-2009 20:38
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