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If x = $\frac{\sqrt{5}+\sqrt{3}}{\sqrt{5}-\sqrt{3}}$, y = $\frac{\sqrt{5}-\sqrt{3}}{\sqrt{5}+\sqrt{3}}$, then (x + y) equals :1). 82). 163). $2\sqrt{5}$4). $2(\sqrt{5}+\sqrt{3})$ |
Answer» 8 | |