1.

If `(a+(1)/(a))^(2)= 3`, then `a^(3)+(1)/(a^(3))` equalsA. `6 sqrt(3)`B. `3 sqrt(3)`C. `0`D. `7 sqrt(7)`

Answer» Correct Answer - C
If `(a+(1)/(a))^(2) = 3` …………
`a^(3)+(1)/(a^(3)) = (a+(1)/(a)) ((a+(1)/(a))^(2)-3)`
`= (a+(1)/(a)) (3-3) = 0`


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