যদি (x-y)<sup>2</sup> =14 and xy=2 then x<sup>2</sup> + y<sup>2</sup> = ?

1. যদি (x-y)² =14 and xy=2 then x² + y² = ?

[27 th BCS Preliminary : 2005]

1. 12

2. 14

3. 16

4. 18

Answer

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