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यदि x = 2 + $\sqrt{3}$ , y = 2 $- \sqrt{3}$ हो, तो $\frac{x^{2} + y^{2}}{x^{3} + y^{3}}$ का मान क्या होगा –

1
$\frac{7}{38}$
2
$\frac{7}{40}$
3
$\frac{7}{19}$
4
$\frac{7}{26}$

Answer:- 4

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