If x=2+root5, prove thatx^2+1/x^2=18
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Posted by Vikash Kumar 4 years, 5 months ago
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Rajan Kumar Pasi 4 years, 5 months ago
{tex}Q.\text{ If x = 2 + }\sqrt5\text{, prove that: }{x^2+\frac1{x^2}=18.}{/tex}
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