x=√3+√2 হলে, x3 + 1/x3 এর মান কত?

A    6/√2

B    18/√3

C    9/√2

D    8/√3  

Solution

Correct Answer: Option B

 

x=√3+√2

1/x=√3-√2/(√3)2-(√2)2=√3-√2

now,

x3+1/x 

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