A) 644
B) 512
C) 488
D) 348
Correct Answer: C
Solution :
\[a+b+c\] \[3(a+b+c)\] \[2(abc)\] \[x=\frac{\sqrt{5}+\sqrt{3}}{\sqrt{5}-\sqrt{3}}\] \[{{x}^{3}}+\frac{1}{{{x}^{3}}}\] we have, \[{{\left( x+\frac{1}{x} \right)}^{3}}={{x}^{3}}+\frac{1}{{{x}^{3}}}+3\left( x+\frac{1}{x} \right)\] \[\left( -\frac{3}{4},2 \right)\] \[(2,2)\]You need to login to perform this action.
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