1.

यदि `a-1/(a-3)=5` तो `(a-3)^(3)-1/((a-3)^(3))` का मान क्या होगा?A. 7B. 14C. 2D. 5

Answer» Correct Answer - B
`a-1/((a-3))=5`
`a-3-1/(a-3)=5-3`
`(a-3)-1/((a-3))=2`
Cubing both sides
`[(a-3)-1/((a-3))]^(3)=2^(3)`
`(a-3)^(3)-1/((a-3)^(3)-3(a-3))xx1/((a-3))`
`[(a-3)-1/((a-3))]=8`
`(a-3)^(3)-1/((a-3)^(3))-3[2]=8`
`(a-3)^(3)-1/((a-3)^(3))=8+6=14`


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