x<sup>2</sup>+y<sup>2</sup>= 34 এবং xy=15 হলে (x - y) <sup>2</sup>=?

Assistant Thana Education Officer-2012

1. x²+y²= 34 এবং xy=15 হলে (x - y) ²=?

[Assistant Thana Education Officer(ATEO)-2012 : 2012]

1. 6

2. 5

3. 4

4. 7

Answer

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