Quadratic equation : দ্বিঘাত সমীকরণ; বর্গীয় সমীকরণ;
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Appropriate Prepositions
Faith in (বিশ্বাস): I have no faith in him.
Feed with (কোনো কিছু খাওয়া): They feed the cow with grass.
Inquire for (দেখা করতে চাওয়া): He inquires for the manager.
Remedy for (প্রতিকার): There is no remedy for cancer.
Smile on/upon (অনুগ্রহ করা): Fortune smiles on/upon the brave.
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Idioms
Back and bally (জীবিকা, ভরণ পোষণ—n) Who will provide the increasing population with the required back and bally?
Carry the day (জয়লাভ করা) The boys carried the day in the debate competition.
Scapegoat (উদোর পিন্ডি বুধোর ঘাড়ে)—He was made scapegoat of the incident.
Through and through (পুঙ্খানুপুঙ্খু রুপে)- He read the poem through and through.
To the letter (in all details, অক্ষরে অক্ষরে) —Follow my advice to the letter.