Quadratic equation : দ্বিঘাত সমীকরণ; বর্গীয় সমীকরণ;
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Appropriate Prepositions
Attain to (লাভ করা): He will not attain to his objective so soon.
Attend on/upon (সেবা করা): We should attend on/upon the ailing patient.
Guard from/against (রক্ষা করা): My parents always guard me from/against bad people.
Wish for (প্রত্যাশা করা): Everybody wish for happiness.
Yield to (নতি স্বীকার করা): I shall not yield to his temptation.
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Idioms
From cradle to grave (দোলনা থেকে কবর পর্যন্ত): Everyone has to learn from cradle to grave.
Man of letters (পন্ডিত ব্যক্তি): You are truly a man of letters.
Slow coach (অলস): You cannot expect much from a slow coach.
To go to the dogs (গোল্লায় যাওয়া)- He has gone to the dogs by keeping evil company.
White color job – (উচ্চ শ্রেনীর চাকরি, যেখানে শারীরিক কাজ নেই বললেই চলে- a job without manual labour) - He wants a white color job.