Quadratic equation : দ্বিঘাত সমীকরণ; বর্গীয় সমীকরণ;
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Appropriate Prepositions
Adapt to(খাপ খাওয়ানো): Everybody must adopt himself to new environment.
Careful of (সতর্ক): He is very careful of his fault.
Competent for(যোগ্য): He is not competent for the post.
Curse for (অভিশাপ দেয়া): If he ever mistreats my parents, I will certainly curse him for it.
Satisfied with (সন্তুষ্ট): The authoress was highly satisfied with Jerry.
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Idioms
Hush money (ঘুষ): He offered a hush money to disclose the file.
Stone’s throw (অতি নিকটে): Our school is at a stone’s throw from our house.
To the utmost (যথাসাধ্য) - I tried to the utmost of my ability to have a job.
To meet trouble half-way (পুরোপুরি মোকাবেলার আগেই হাল ছেড়ে দেয়া): He met trouble half way after getting the instructions.
Upper hand (প্রাধান্য) - He got the upper hand in the selection.