1.

यदि `a^(3)+b^(3)=9` और `a+b=3` है तो `1/a+1/b`का मान ज्ञात करें।A. `1/2`B. `3/2`C. `5/2`D. `-1`

Answer» Correct Answer - B
`a^(3)+b^(3)=9`
`a+b=3`
Assume values `a=2, b=1`
`:. (2)^(3)+1=9`
`2+1=3`
`:. 1/a+1/b=1/2+1=3/2`


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