নিচের কোনটি বৃত্তের সমীকরণ?

Created 1 year ago | Updated 2 days ago
(ক) 3x^2 + 4y^2 = 2
(খ) xy = 1
(গ) x + y = 4
(ঘ) x^2 + y^2 = 5
No explanation available.

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