1.

यदि `p^(3)-q^(3)=(p-q)[(p-q)^(2)+xpq]` हो तो `x` का मान बताइये?A. 1B. -1C. 3D. 2

Answer» Correct Answer - C
`p^(3)-q^(3)=(p-1)[(p-q)^(2)+xpq]`
`(p-q)(p^(2)+q^(2)+pq)=(p-q)`
`[p^(2)+q^(2)-2bq+xpq]`
`implies p^(2)+q^(2)+pq=p^(2)+q^(2)-2p+xpq`
`3pq=xpq`
`x=3`


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