1.

यदि `a+1/a=-1` है तो `(1-a+a^(2))(1+a-a^(2))` का मान है?A. 1B. 0C. -4D. 4

Answer» Correct Answer - D
According to the question
`a+1/a=-1` and `a^(2)+a=-1`
`a^(3)=1`
`(-a-a)(-a^(2)-a^(2))`
`(-2a)(-2a^(2))`
`4a^(3)=4xx1=4`


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