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यदि `x^(2)+1/(x^(2))=98(xgt0)`, हो तो `x^(3)+1/(x^(3))` का मान बताइए?A. 970B. 1030C. -970D. -1030 |
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Answer» Correct Answer - A `x^(2)+1/(x^(2))=98` `x^(2)+1/(x^(2))+2=100` `(x+1/x)^(2)=100` `x+1/x=10` `x^(3)+1/(x^(3))=10^(3)-3xx10` `x^(3)+1/(x^(3))=970` |
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