SOLUTION: IF X=3+2RT2 FIND THE VALUE OF X^3-1/X^3?

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Question 983442: IF X=3+2RT2 FIND THE VALUE OF X^3-1/X^3?
Answer by ikleyn(52797) About Me  (Show Source):
You can put this solution on YOUR website!

Hello,
what is 2RT2 ?

What is this ?