Quadratic equation : দ্বিঘাত সমীকরণ; বর্গীয় সমীকরণ;
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Appropriate Prepositions
Absent from(অনুপস্থিত থাকা): I was absent from the class yesterday.
Attentive to(মনোযোগী): He is attentive to his business.
Consist of(গঠিত হওয়া): The committee consists of ten members.
Crave for(আকাঙ্ক্ষা করা): Everyone craves for care.
Hanker after (আকাঙ্ক্ষা/লোভ করা): He hankers after riches.
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Idioms
Burning question - (গুরুত্বপূর্ন বিষয়): Poverty problem is a burning question of our country.
Fight shy of (এড়িয়ে যাওয়া): Honest boys always fight shy of bad and dishonest friends.
Head and ears (সম্পূর্ণরূপে): He is over head and ears in debt.
Out of temper (ক্রুদ্ধ): The teacher is out temper to see the overall results.
Pass away (মারা যাওয়া)— He passed away last night.