how to solve this question? x3+1|x3 where x=2+root 3 in this x3 is x cube.
Asked by | 15th Aug, 2012, 12:44: PM
Use the identity a3 + b3 = (a + b)(a2 - ab + b2)
So, x3 + 1/x3 = (x + 1/x)(x2 - 1 + 1/x2)
Now, find the required values and substitute in the above equation.
Answered by | 15th Aug, 2012, 10:03: PM
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