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以下問題是中英對照，答案只有英文版。
F4-F6 Question Bank All Topics (zipped file )
Arithmetic and Geometric Sequences and their Summation
Basic Properties of Circles II
Coordinate Treatment of Simple Locus Problems
Exponential and Logarithmic Function
Linear Inequalities in Two Unknowns
More about equations
More about Polynomials
Quadratic equations in one unknown
Qualitative Treatment of Locus
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mathspercyyeung 
May I have the ans please
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答案只提供比我自己的學生，但如果你有心完成練習，也可把你完成的練習send 比我，我也可給你答案的。Email: percyyeung81@yahoo.com
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請問有冇關於quadratic equations 嘅練習？
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請問有sum and products of roots的練習嗎？我在quadratic equation找不到
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可以考慮做這份：
按一下以存取 mc4a2-quadratic-equations.pdf
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Yeung sir, may I have the answer. Because the epidemic is getting worse, so I think the exercise at school is not enough for Dse,I want to do more practice and find your stuff is very useful. Thanks a lot
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一直以來，本人免費電郵同學/家長發出題解，希望鼓勵同學有心完成各練習，過往也得到很多人的支持。然而由於太多人希望索取答案，本人實在沒時間逐一回覆，對有需要的同學/家長感到很抱歉。現在以$3每個課題出售答案，此措施也希望能補助網站的營運。有興趣的請whatsapp 聯絡楊sir 97807453。多謝各位！
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