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1. যদি (x - y)2 = 14 এবং xy = 2 হয় তবে x2 + y2 = কত?
- A. 12
- B. 12
- C. 12
- D. 12
Answer: Option D
Explanation:
আমরা জানি,
x² + y²
= (x - y)² + 2xy
= 14 + 2×2
= 14 + 4
= 18
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1. যদি (x - y)2 = 14 এবং xy = 2 হয় তবে x2 + y2 = কত?
Answer: Option D
Explanation:
আমরা জানি,
x² + y²
= (x - y)² + 2xy
= 14 + 2×2
= 14 + 4
= 18
Post your comments here: