Question:নিচের কোনটি এক চলক বিশিষ্ট দ্বিঘাত সমীকরন? 

A `x^3 - x^2+ 2x-2= 0` 
B `3x^2 -2x -5= 0` 
C `3x-3=3` 
D `x+7-5=10+5` 

+ Answer
B 

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Rashada Nipa

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